nah, that won't work. if the card works at all, i'd guess that the whole thing does anyway. white spots would definitely be corrosion in my experience... got any cats?
It can't be the river Waal, as I live a few meters along it, in the same town
Climate conditions in the computer's room however can be determating.
Humidity is the keyword here.
good luck
Eventually cleaning wasn't the problem. The error came back.The S/TDM cables where the problem.I could not connect them right. When I moved the cables a bit I saw the dsp load get higher.Problem solved, but it's pretty crap how it works.