>    Short of giving up on debugging this thing with my desktop 
> machine and 
> switching to the laptop (which would involve me reinstalling 
> MPLAB), can 
> anyone suggest anything else I could try that might get rid 
> of (or at least 
> severely attenuate) the noise?

I would guess this noise originates from the PCs +5V supply, which is
probably the direct source of the USB +5V. Have you tried

- using the ICD2 without powering the target from the ICD2
- a powered USB hub between the PC and the ICD2

Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: www.voti.nl
consultancy, development, PICmicro products
docent Hogeschool van Utrecht: www.voti.nl/hvu
 

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