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I recently updated my system from 11.04 to 12.04. UI is too slow. System specs: Acer aspire 4715z, 1gb ram, dual-core, mobile intel grahics

Reading other links suggest to switch back to Gnome/unity 2D, but Unity was working fine in 11.04. Does any other upgrade is required?

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Install fresh ubuntu 12.04 instead of upgrade – shantanu Jun 6 '12 at 18:56
I installed freshly from usb.. – user148085 Jun 6 '12 at 19:01

Switch to Unity 2D, it will make all the difference.

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