mouseover blanks out data in software update list

[Wiliam Scheb]

When I open the Software Update in Ubuntu Software Center and selet the System or any other menu, often no data is displayed unless I try to move the slider. Then when I mouseover a package it disappears. If I drag my mouse down the page, all packages disappear. Only whenI try to move the slider down do they reappear. I have installed a package if I move the mouse over the blank item where the word Install had appeared. In addition I have a problem with the slider. When I click on the slider to drag it down, the list moves up as the mouse goes to the bottom, although the slider itself hardly moves and when I reclick on the slider to drag it down again, it resets and I can't go through the whole list. Also I can't seem to be able to use the scroller on the mouse to scroll the list.