[WriteLog] CW gibberish

[Barry]

After operating the contest for about 30 minutes, I remembered why I 
used N1MM last year - every now and then, with no discernable pattern, 
the CW output turns into gibberish.  I'm using a Dell laptop (WinXP, 1 
gig RAM) with 2 USB to serial adapters - one for the radio control and 
one for CW.  It works fine with N1MM and is not due to RFI as it occurs 
even when not transmitting on the air.  Any ideas?
Tnx,
Barry W2UP

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Barry Kutner, W2UP             Newtown, PA