Ubuntu Tweak is an application to config Ubuntu easier for everyone. It provides many useful desktop and system options that the default desktop environment doesn't provide. With its help, you will enjoy with the experience of Ubuntu. Ubuntu Tweak popped out a new release one stuffed full with some great new features. It is a bug-fix version coming with a lot of PPAs update.Initial support has been adeded for Ubuntu 11.04 Alpha, including Compiz settings pre-Natty users will be familiar with (E.g. Workspace Edge Settings, Desktop Effects and Menu Effects.) 

Enable workspace switching using mouse scroll wheel.
We’ve covered five ways to switch between workspaces in Ubuntu a few months back. Now we’ll have to make that six ways to switch now that Ubuntu Tweak has added a single-click solution to enabling “Workspace switching with mouse wheel”. Once enabled click on a blank part of the desktop and scroll up or down to roll on to the the left next workspace.

MeMenu tweak
Fed up of seeing your ‘username’ in the MeMenu? Help is at hand in this release; a new option, Me Menu Setting, gives the ability to swap between real name, user name or no-name at all in the MeMenu area.
Helpful helper is helpful
Lastly is the addition of a ‘system error’ helper that, rather than bleating on that something is amiss, actually offers up assistance in fixing the problem.

Ubuntu tweak 0.5.8 can be downloaded in this link.