I have the same problem with coz4444 but my computer doesn't restart on its own. I restart it after a short period of time because I can't get any response by it after closing limewire with the task manager. Anyway, I will try to update my drivers and see if the problem continues. ( My question is why does it crash since I upgraded to PRO? ) I will contact you when I'm done with the drivers.

Hey guys! Guess what? I made limewire working again. It was so simple: I just had to format my disk because I had an other virus problem. Now I downoaded LW 4.12.4 again and it works perfectly.(But don't close this thread yet, because I'm so bad-lucked and if it happens again, I contact you.) Thanks for your help anyway!