[details]
screen shot

Build Image(yyyy-mm-dd):
moblin-2.1-final-20091103-002.img
bickley-0.4_20091116-16.1.moblin2.i586;
bognor-regis-0.5.0_20091116-17.1.moblin2.i586;
hornsey-1.0_20091116-18.1.moblin2.i586;

Bug detailed descriptions(behavior, impact, etc)
===========================================================
If there are 15-19 thumbnails in one category, hornsey will show part of
thumbnail and no scroll bar.

Please see the screent shot;

Reproduce Steps(steps,current result, reproduce possibility)
===========================================================
(1) Copy 19 video contents into /home/usr/Video;
(2) Launch hornsey find that hornse will show part of thumbnail and no scroll
bar.

Expected result:
===========================================================
Hornsey should add scroll bar in this situation so that all thumbnails can be
browsed by user.

Possible root cause:
===========================================================