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After upgrading to Ubuntu 12.10 ..I started facing several issue. One major issue is if I start Ubuntu and start using any browser after sometime screen gets frozen and nothing works but right click still works while left click doesn't work at all. I some how manage to reboot using right click or hard reset. but every time I face this issue. It happens with all the browsers like Firefox, Chrome, Chromium etc.

ALT+TAB also stops working ..its show very random behavior...scrolling works with some hick-ups.

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I'm still fairly new to linux, but am enterprise support for windows machines and that sounds like a USB and/or driver issue to me. Do you have any access to test the USB devices elsewhere or clean install 12.10? –  meteorainer Apr 18 '13 at 20:32

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