I randomly get disconected from the internet, patictuarly when downloading big files, but it can happen anytime.Please help!

Hello fioper, Is your machine Vista SP1 or Vista RTM? And what do you mean by disconnect? Do you completely loose internet connectivity (ie: you need to reconnect wireless network again...) or just the copy fails? Thanks.

It is a SP1 machine, and I have to restart my computer to be able to connect to the internet again.

When you get diconnected can you run following commands and paste the outputs here? ipconfig /all route print arp -a Thanks.