How to manually uninstall urllib, urllib2, requests python packages?

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http://unix.stackexchange.com – I'm having a problem with urllib, urllib2 and requests, three python libraries. I use Ubuntu 10.04.4 LTS and python 2.6.5 (we can use with python) (but I had installed manually, after the problem, python 2.5.6 and python 2.7, respectively python2.5, python2.7). Initially my packages worked fine, but in some point, maybe updating the kernel, not sure, nothing works. The strange that is if I run python using root, the commands works fine (please see this question in Stackoverflow), but using the common user don't works. I think the problem is, I had installed this packages using pip and easy (HowTos)