Unity Tabs are flickng and messing every time I try to drag and drop something

It’s really hard to work with it like that and I really need to put some graphics into the game and they need to be alligned.

Here’s a video showing what is really happening:

The sooner someone helps me the better =]

thanks in advice

What version of the editor are you using and what version of Windows is that?

Windows 7 and Unity 4.5.2

Your graphics drivers are up to date?

Yes they are