Frostysnake
Try reassigning them...
You got me on the right track...
While starting to reassign, I noticed I already reassigned 'Smart' to alt-X and 'Select' to alt-V some time ago (which works fine).
If I only use the other keys F7-F10 everything is fine UNTIL I HIT F5 or F6, the original 'Smart' and 'Select'.
Once I do that, F7-F10 won't work until I hit alt-X or alt-V. Everything is fine again until I hit F5 or F6 again.