Please describe the problem:
Both the seek bar in the main interface, and the pop-out seek bar triggered by pressing 'T', keep following the mouse once they have been dragged. With the pop-out interface, closing the window removes the seek bar and thus Banshee can still be used, but with the seek bar, it makes it really hard to use Banshee (one is reduced to keyboard navigation) until Banshee is restarted: hiding / redisplaying does not help.

Steps to reproduce:
1. Start playing a song
2. Drag seek bar



Actual results:
Seek bar keeps following mouse

Expected results:
Seek bar should not follow mouse once the dragging action is completed

Does this happen every time?
Yes

Other information:
First reported by a Fedora Rawhide (i686) user:
https://bugzilla.redhat.com/show_bug.cgi?id=465919

and verified on my computer running Rawhide (x86_64):
$ rpm -q mono-core banshee
mono-core-2.0-10.fc10.x86_64
banshee-1.2.1-2.fc10.x86_64

This could potentially be an interaction problem with Mono 2.0, as I don't quite recall the seek bar being broken before. The first reporter has recompiled Banshee to test, and tried the latest development version and reported the same issue with both.