[gnome] Gnome running slowly on ubuntu 12.10

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http://ubuntuforums.org – I installed ubuntu 12.10 on my laptop. I have tried other distros including OpenSUSE and Fedora (17), both with Gnome3. I really like Gnome3, and wanted to install it on ubuntu. I managed to do so, but it lags and runs slowly compared with it on Fedora/OpenSUSE. For example, when logging it, after typing the password and hitting enter, it will hang for a good 5-10 seconds before responding. Is it possible to make Gome3 run smoother, and if so, how do I do it? I'm having to make do with unity at the moment, Gnome3 was too slow. Cheers (Hardware)