[metainf]

I've just got Solidworks, and when I am in the assembly mode, there are some odd things happening.
The first oddity is when I have the corner extrusions and the C channel extrusions in the same assembly. When happens is when I move my mouse to the C channel, the corner extrusions disperser, and when I move my mouse away, they reappear.
The other is when I have my mouse over a face in the same assembly above, the dynamic highlight is not working.
They where working the day before, but now the assembly mode is messed up.
Right now, I have the 2010-2011 academic version, running in Windows 7 professional.
Is this just a problem with my computer, or do I have to re-install Solidworks?
Thanks