Rooting your Xperia X10 and X10 mini is not to difficult. You can do it easily with one click. All you have to do is download and install the UniversalAndroot apk. Once installed, all you then do is click the root button and you should have a rooted handset. The apk also has an unroot button, so if you don’t want it for whatever reason you can always revert back. The benefits of rooting are numerous and include being able to run root-only apps such as Titanium Backup and Barnacle Wifi Tether that turns your X10 into a wireless hotspot. Update: For those that cannot get this method to work, then you can try an alternative apk courtesy of xda-developer member ardf69 called X10Root.