Hell-o! I got this crap with CS:S (never liked it, but hell..).
When I play game in local hosted maps or in online pubs, i have lags, which are much like internet lags. The picture is a bit hanging on. Not much, but noticeable. I Cant complain about PC, which is quite a tanking horse even for these days. + My ping is always one of lowest.
So - what the hell?
Added (2009-01-26, 8:12 Pm)
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Could it be from HDD? I have not SATA, but could that affect so much?