Hog 3 Macro and List key flashing issue

Has anyone seen anything similar:

Macro and List key LED's flash, without any (aparent reason) and won't stop. Macro key still brings up the "Not implemented" dialog and the List key still opens the list directory.

Can't see any other adverse effects of this, except that the LD gets a little panicy! I've now seen this twice in the last 2 weeks so I can't really correlate the circumstances under which it happens.

Any insights?

F.

Hog3 v3.1
2 x DP2000
1 x ELO touchscreen
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