I think it's TF2, might be HL2, but one of them just flicks on and off my desktop halfway through loading. It's really weird.
Oh, and EVERY time my TF2 is 5 bars from loading a match, it freezes for about 2 minutes before loading the next one. Once that's done, there's a 50% chance that it'll just fail to load the last 4 bars, meaning I have to cancel. The second time it always works, but then then
half the time it gives me a disconnection error. But I've NEVER had it go wrong on the third try
Weird, these issues don't seem to affect my favourited servers.