It's 'Lost udp switching to tcp'
when that happens, reconnect, flying with tcp SUX, you need udp
why it's happening could be the result of alot of different problems, your isp, a rogue program always accessing the internet, routing problems.
Have you installed anything lately?, Could be the culprit.
Could be software related, like pr0n?

, they install all kinda nasties,, get adaware or spybot or both, they'll find the baddies and get rid of them for ya, just do a search in google for them.
If that don't fix ya up, do a ping trace to try and locate probs.
Hope it helps