Hi I have installed the Mint 15 ISO with cinnamon 1.8 on my system and the past two nights having left the computer on I have came back to the desktop manager unresponsive and wont open any documents such as PDF. Also clicking on Thunderbird or Firefox does nothing but Nemo will open a folder location albeit very slowly. If you persist on opening files eventually the mouse begins to lag and then the system locks up (cant even CTRL+ALT+F1) so I have to power down the system to restore it.
Never had this in Mint 14 with Cinnamon 1.6. Any ideas what may be causing this?
System is Mint 15 64bit on Intel i5 with 8gm ram.