Since I do not use them at this time I tried to uninstall `virtualenv` and `virtualenvwrapper` via the Ubuntu Software Center. Now whenever I open a console I get the following error message:

```
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ImportError: No module named virtualenvwrapper.hook_loader
virtualenvwrapper.sh: There was a problem running the initialization hooks. If Python could not import the module virtualenvwrapper.hook_loader, check that virtualenv has been installed for VIRTUALENVWRAPPER_PYTHON=/usr/bin/python and that PATH is set properly.

```

Also the directory `~/.virtualenvs/` is still present.

How can I bring my system back to a clean and functional state as before the installation of `virtualenv` and `virtualenvwrapper`?

**Updates**

As suggested I checked the following files for occurrences of `virtualenv` each with a negative result:

```
~/.bashrc
~/.profile
/etc/profile
/etc/profile.d/*
/etc/environment

```