Ubuntu crashes after deleting a python script...

Hey everyone!

Ok, so here is the situation: I have a netbook running Ubuntu mini standard edition. Yesterday, I was using IDLE to work on a python project (I run python 2.5 with numpy 1.2.1) and one classes I had to create required the module random. So I import the module but then I see that there are no methods in it... So I try to look which random module it is that I had imported and I realize python did not import the right one. So, I deleted random.py and random.pyc from my running directory and suddenly, IDLE crashed. I try to restart it but it does not even complete the starting process. So I think that the IDLE process is still running in background so I kill the signal in console and try to start it again but it still does not work. Lastly, I try to open my add/remove program application and this one too seemed to have crashed... Now, the other programs work correctly but all the administrative tools, IDLE and the add/remove program do not work any more......... Now, does anyone know what could be the cause of this?

Sorry for the two posts, for a mysterious reason my browser gave me a database error and I thought my message had not been posted...

The minimum memory requirement for Ubuntu 9.04 is 256 MB of memory. Note that some of your system's memory may be unavailable due to being used by the graphics card. You may need to install the python-launchpadlib package from the universe repository. Additionally, when prompted to give apport-collect permissions for Launchpad you will need to give it at least the ability to "Change Non-Private" data. Systems with less memory may be able to select "Install Ubuntu" from the boot menu to run just the installer, rather than the whole desktop, or may be able to use the alternate install CD.