Strange date

Hi all.

I bought my MacBook pro before 6 months. Although I am happy with it, i have some problems with the date.

Actually, when I use iCal, everyday is the 9th of October(!!!). When I do the window smaller, then I can see the wright date. However, this problem occurs only when I use the iCal on week mode.

Ok, but now I found another problem. When I browse the finder through an application (just to load a file in a program or to attach something in an email), everything is still last modified-created-or whatever, on 9th of October.

Any suggestions??

Thanks for your time.