Graphical glitches in Ubuntu 12.04 beta, updated 24.03.2012 [closed]

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http://askubuntu.com – Possible Duplicate: There's an issue with an Alpha/Beta Release of Ubuntu, what should I do? System specs: Asus Eee 1000H Intel Atom N270 (1,6 GHz) 2 GB RAM Intel GMA 945 GPU (with drivers from Intel) After updating today (March 24. 2012), I'm experiencing graphical glitches in Unity 2D. Parts of the dock and the left side of the panel is disappearing briefly when I mouse over them, but all buttons etc work as normal. There is also a black bar covering the top part of any programs running (but not the desktop). These problems have not been encountered before this latest build (HowTos)