I have just installed Ubuntu 11.10 on my Dell Vostro 3700, but it seems that Unity does not work properly, in the sense that I cannot move windows from one workspace to another and cannot maximise windows moving them to the top of the screen.
The strange thing is, when i tested Ubuntu from an usb-stick these features were working, but after installing it to the hard drive, Ubuntu 11.10 does not do these things properly.
One additional detail: in Ubuntu 11.04 it did work.