Same if i right click on task bar it show up a black empty square but when moving mouse in it show up lines. Like icons and preview thumbnail are no more showing on task bar, when i click on start menu, it doesn't seem to show up but when move mouse up i start to see lines of each row showing up. I think it is memory leak, after some hours of use, i start to see weird things. Since upgrade to build 9879 i have an other big issue and if anyone can please help with it.
