Actually there have been issues with graphics cards. eg: The way to fix the Blank screen on startup There's also been laptop issues which involved needing to upgrade their intel drivers, etc. And also these probs

Also for some people, they've found the beta version to be a little more system friendly. But how it performs on particular systems, as with the 4.8.1 will of course vary. Pro users can downld the pro beta from their personal downld page. For everyone else from here http://www.limewire.com/english/content/beta.shtml