I have been using Windows 7 RC1 and i have been having problems with the aero peak function. Sometimes when i hover over the task bar icon it wont switch to that window when i click it. The preview works, but as soon as i click on it, instead of swiching to the previewed window, it switches back to the previous one. I have noticed that it happens especially with some non-windows apps (ie: quicktime) but it always works with IE8 or windows explorer open.
Do you think this is a problem with the manufacturers of these applications not updating their programs or what?