Windows 7 - help regarding toolbar in taskbar..

Hi to all, im having an annoying problem from the first version of windows 7 beta(build 6519) till now(rtm version). I didnt had this problem in vista or xp. Here is the problem,

I have created a new toolbar in the taskbar to navigate the songs in the order of artists.(i have all my songs in drive f:, so simply made a toolbar of that), the problem is whenever i navigate my songs through this toolbar menu, it automatically refreshes in 5 or 10 secs (those seconds vary randomly).Then i have to navigate to the place where i left again from the beginning, this simply annoying, people with similar problem or having any solution pls help......

I thought of not posting this issue for months, but its the time for it...

here are the pictures of it,


in this menu when i navigate in some interior folders all of a sudden the menu will refresh automatically and it will be gone, and i have to start from the beginning...

can somebody provide me suggestion plss.................