Thanks a lot. I think youre right. I'll try to delete all registry keys regarding to the WL-100g. The strange thing is that the problems occour while transfering data over IP. Yesterday I had the same problem with the PCMCIA slot 2. Suddenly I got no IP response while surfing in the internet. Changing the card back to PCMCIA slot 1 and reinstalling the drivers solved the problem. I hope it's not necessary to change the card after beeing some hours online...