I have heard of this before, but not in SC but in DW. Do you have a dual core processor? If so see this thread http://www.subsim.com/radioroom/showthread.php?t=103031 which contains a link to somewhere that had info on how to cure this problem. Hope it helps.
Nemo
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"I'm afraid there is no disguising the fact that King's obsession with the Pacific and the Battle of Washington cost us dear in the Battle of the Atlantic".
Sir John Slessor GCB, DSO, MC, DL
AOC-in-C Coastal Command RAF
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