So I switched my computer to Ubuntu after some issues with Windows, then switched the GUI to Xubuntu after I noticed Ubuntu and Unity were painfully slow.
I'm running an i5 with 8 gigs of ram and I still experience at least one full freeze (where I can't do anything and have to unplug) per week. REISUB does nothing and never has. The GPU is an onboard Intel and my Ubuntu version is 13.10. The only process that's ever really using memory/CPU is Virtualbox, and I've never seen it above 50% memory or 25% CPU. I have never had this issue with Windows.
I am constantly running Virtualbox because I still need Windows.
Any thoughts to prevent this annoying freezing?