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+1 I'm still getting this. Seems to be since the last time I updated Parallels. It's Parallels Control Center, Antimaleware Service Executable...
I think I'm having the same issue, but I'm running Parallels 9 (9.0.23062, revision 920702). I think I've only noticed it when in dual screen...
I just upgraded to Parallels 9 too. Running Windows 7 (Pro x64) off a boot camp partition, I'm getting the three Human Interface Devices...