The admin panel would not load

I have recently installed wordpress. While I was using it for first 10 days it was OK. But now I am hardly able to login to my admin panel, it just would not load %(. I just get an empty screen – no errors.
Although the gorum itself would work OK
http://blog.niskay.com
Writing new post and editing old ones is a BIG problem now. Does anyone have any clue what’s the reason of this problem?

Here is the address of the login screen that would not open

http://blog.niskay.com/wp-admin/