Icons, mouse pointer, turned black on my Macbook

I'm running Leopard on my Macbook and I noticed that lately my mouse pointer has turned to an all solid black pointer hand when I mouse over links. Also when I goto shutdown I notice a big black circle appears in the shutdown prompt. Also icons like the webcam icon have turned a solid black in Yahoo Messenger .. Did i get a virus or something?

You may want to repair permissions and the disk. You might also want to try reinstalling the software.

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