Strange dates in DatetimeIndex after upgrade
Dates started displaying incorrectly after I upgraded to pandas 0.8.0.  For example, using the date_range example below from the documentation, 1/1/2011 shows up as 2051-05-17.

My installed packages include numpy 1.7.0.dev-3cb783e-20120427, pytz 2012c, python-dateutil 2.1, DateUtils 0.5.2.

Python 2.7.3 (default, Apr 19 2012, 00:55:09) 
[GCC 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2335.15.00)] on darwin
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`>>> import pandas`
`>>> pandas.__version__`
`'0.8.0'`
`>>> from pandas import date_range`
`>>> rng = date_range('1/1/2011', periods=72, freq='H')`
`>>> rng[:5]`
`<class 'pandas.tseries.index.DatetimeIndex'>`
`[2051-05-17 05:40:40.331386880, ..., 2051-10-30 21:40:40.331386880]`
`Length: 5, Freq: H, Timezone: None`
`>>>`
