My mouse looks like a minimized snapshot of the window that was open at last. And icons and symbols are totally mixed up. Sorry but I'm unable to upload a screenshot at the moment. I thhink it is an issue with the open source driver of my nvidia graphic board but i have nvidia optimus so a standard nvidia driver cant be installd properly.
FYI there is a project called Bumblebee for getting Optimus to work on Linux. Supposedly the official Nvidia binary is supported. I haven't used it myself though so I can't vouch for it.
I believe there is a fix for this by using the --softwareui switch, SXX is the best person for help with that though...
You need to install the Mouse Cursor Fix mod. It will fix your mouse cursor when using the open source drivers. Get it through PAMM.
As death by denim said, there is a fix available You first need to get the PAMM (PA Mod Manager) which is available in the Modding sub forum under 'released mods' (or just click the link denim posted). Once you have that, open it up and you can look through all the mods available. The 'mouse cursor fix' mod should be listed in the 'UI mods' section. Install it then try the game again and let us know if it's resolved