I regularly play online steam games such as TF2 and HL2DM, but recently I've had a problem with lag. The lag isn't normal slow-internet lag, either. Every minute or so (variable, sometimes I can play for 5 minutes or only 10 seconds) the game lags for 6-8 seconds. My character freezes movement, just like normal lag, then ends up wherever he was going when the lag started 6 seconds later. I searched on the valve support pages, and perceivably found my fix, but it turns out that did not work. I have tried limiting my startup services to those I need to run my computer, but the lag is still there. I re-installed steam. I also scanned for viruses. The lag spreads across all my online steam-based games, Though i don't play any non-source engine games online, so that might have something to do with it. My specs: Dell DIMESION DIM4700 intel pentium 4 CPU 3.00 GHz 2.50 GB RAM RADEON x300/x500 series (I'm expecting a 8800gt in a week)