A few weeks ago, the window and options for my task manager just dissapeered! It DID look just like this one that I found a pic of-



But NOW it looks like this- The first time it happened I was stumped for a few seconds wondering how the hell I was going to exit out of the task manager itself untilI reaised I could just kill the process

What did I do and how do I fix it!? (I'm on vista if that makes a difference.)

Cheers in advance.