Ok ... i tried ProgDVB x86 ... the same problem exist.
But i figured out what is the problem exactly. I always disable the option "Single click channel select". This what cases the problem. If the option is checked no problems at all.

That is, double clicking the "Most Popular Channels List" has a ...

Prog wrote:Do you use some not standart skin?

I'll assume you are talking to me .. No i don't use any other skins but the default one.
It's name is "Skin 1" ...

Thank you for your concern,

I use 'Most Popular Channels List' a lot, but everytime i click a channel other than the one at top of the list something weird happen. All channels shifts down leaving a white useless space...

http://img861.imageshack.us/img861/2789/captureq.jpg

I'm running ProgDVB x64 v6.60.05 on Windows 7 x64 ...