Vista - Start Menu and Taskbar issues

On Vista Business:
1. The width of the recently opened documents list does not reflect the
change in document name length - it is truncated when opening it the first
time after accessing a document whose name is longer that the names of the
currently listed items.
2. The checkbox "Store and display a list of recentrly opened files", under
Taskbar and Start Menu Properties/Start Menu/Privacy, unchecks "by itself"
_in the same session_.
2'. Maybe related to this, the list of recently opened documents is cleared
_in the same session_ (most probably when the checkbox unchecks itself).