Back to work!
I succeeded in making my machine usable again, after the crisis I had with the DevPartner profiler.
What I did was to uninstall all the VS.NET and .NET Frameworks I had (2003, 2005, v1.1, v1,2 respectively), and re-install v1.1 and VS.NET 2003. Now everything looks fine.
I sent mail to Compuware support regarding this issue. I hope they'll respond, and make sure it won't happen again.
Things like that make bad reputation for a company's products. Next time I'll have to use one of Compuware products, I'll have second, third and fourth thoughts.
Pitty.