This tutorial will focus on fixing the 'Disk Overloaded 100%' notification with uTorrent 1.8+.. It is an extremely common issue, and a very simple problem to correct..
1. Open 'Options' --> 'Preferences'
2. On bottom left-hand column click the '+' sign next to 'Advanced' to reveal new choices below.
3. Click 'Disk Cache'
4. Uncheck 'Enable caching of disk writes'
5. Click 'Apply'
*Congratulations! Disk overloading should no longer be a factor anymore.