I am running LMDE on an IBM ThinkCentre S50 and an IBM ThinkPad (T40 with an R51 motherboard). The desktop is fine, but the first time I click on 'Menu' on the laptop, I get nothing but the grey rectangle. No icons; the click-sensitive areas are present - but invisible i.e. clicking on the rectangle causes an application to open. Click away and retry - and the icons appear.
Any suggestions as to how to fix this irritation gratefully received.
I have installed Update Pack 3 on the laptop. It appears to be running well, but it didn't fix this problem.