Python crashes after string strip
This minimal code crashes my Python. (Setting: pandas 0.13.0, python 2.7.3 AMD64, Win7.)

``` python
    import pandas as pd
    input_file = r"c3.csv"
    input_df = pd.read_csv(input_file)
    for col in input_df.columns:  # strip whitespaces from string values
        if input_df[col].dtype == object:
            input_df[col] = input_df[col].apply(lambda x: x.strip())
    print 'start'
    for idx in range(len(input_df)):
        input_df['LL'].iloc[idx] = 3
        print idx
    print 'finished'
```

Output:

```
start
0

Process finished with exit code -1073741819
```

What prevents the crash: 
1. Removing lines from c3.csv.
2. Removing `.strip()` from the code.
3. Changing c3.csv changes the amount of `for` iterations until the crash in unexpected ways.

Contents of c3.csv:

<code>
 Size    , B/S , Symbol    , Type , BN , Duration , VR , Time    , SR ,LL,
0, xxxx , xxxx0 ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
00, xxxx , xxxxx ,   ,, xxx , 00000 , 00:00:00 , 000000000 , 00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
0, xxxx , xxxxx ,   ,, xxx , 00000 , 00-00:00:00 , 000000000 , 00-00:00:00 ,
</code>
