I’m left-handed and I use to have the mouse at the left-side of my desktop. Unfortunally mouse pointers are for right-handed people and always point to the left. This is a little bit confusing (Yes you can think I’m a strange person 🙂 ) and I googled a little to find a cursor theme for left-handed people.
First you have to install a cursor theme that supports left-handed people. Ubuntu and Debian standard repos have the very nice comix cursors theme. Ubuntu does not install a very usefull (for me) utility gcursor. It give you a nice GUI to select the cursor theme for your user. With Ubuntu simply install the cursor theme and gcursor and thas follows:
sudo apt-get install comixcursors gcursor
Now simply go in System->Preferences->Cursor Selection and choose the cursor theme you prefer.