Apologies for posting again, I originally asked in Harmony 880 owner's thread but received no replies, so trying in a dedicated thread.
Please see:
http://www.avsforum.com/avs-vb/showthread.php?p=10636671&highlight=double+click#post10636671

I upgraded from XP Media Center Edition to Vista Ultimate's Media Center.

Harmony 880 worked fine with XP.

With Vista when I click a remote button the PC responds as if I clicked the button twice, e.g. press direction left, PC moves left two places.

This does not happen all the time.
It seems it happens more frequently when the PC is busy, e.g. right after resume from sleep.
Once this happens and I exit Media Center using the mouse, and restart Media Center, the remote works fine again.


Anybody have any ideas how to solve this?


Regards
P.