A couple of hours ago I lost my connection and thought it was caused by the
ISP (this happens once in a while) but then I noticed that all programs and
some games that try to connect to internet crashes sooner or later. Firefox
is showing a blank page and crashes when I close it down, IE7 crashes when I
hit F5 a few times and after the first crash I can't even get it to start up.
World of Warcraft and BF2 reports there's problem with connecting or creating
a socket. I'm writing this through a virtual machine with WinXP on the same
system so the connection problem obviously isn't on the ISP side. Any ideas?

PS
I'm running Vista Ultimate x64