I am having a really really weird problem with visual studio 2008 and the quickwatch feature. When I put the mouse over the variable, it should show the variable’s value, right? Well it shows a white tooltip instead, as you can see in the following image:

However, if I write the variable into the watch window, it works correctly, and even if I do a right-button click and press “quick watch”, it shows the value correctly too.
Does anyone know what happens?
EDIT:
I have reinstalled Visual Studio, and it still happens.
I have discovered another thing: if it is a complex variable (with attributes), and it has a “+” symbol at left in any attribute (to expand it), and I click where that “+” symbol should be, suddenly I can see the attributes at that level, as you can see in the image:

Mouse pointer is above “currentPanel”, and the values has appeared after clicking at the “+” symbol (at least where it should be, because until I click it I cannot see it)
It can be a problem with graphics card driver. Try to re-install it