bug when switching spaces

there seems to be a bug where when i half-swipe between desktops spaces
(meaning i dont go all the way...i bounce between desktop spaces)
i lose my icons on the dekstop and they dont come back, unless i enter mission control and come back or switch spaces again and hope it works

they are missing but they are really there and you can click on them as if they were. you cant see anything but the folder will magically open if you click the right spot

 

it seems I'm the only one with this problem... does anyone else have this problem?

 

it also seems its only on a unibody of late 2008.
because the other 2 computers i tested it on were newer and did not have any problems
does anyone with a late 2008 have the same problem?

 

here is a video i created of whats happening when i start to switch spaces
http://www.youtube.com/watch?v=tyiNBaBCbWM