Comment 25 for bug 721896

Yes, I also noticed that running a virtual machine in VirtualBox is almost guaranteed to start this issue immediately – apart from the sporadic occurrences when having the system with Firefox and Thunderbird run for several days and doing hibernate/resume over night.

Anthony, is this the PPA you are talking about?

https://launchpad.net/~canonical-kernel-team/+archive/ppa

I'd also like to give this a try, as this kswapd0/high IO load thingy has been a real bummer for many months now...

Thanks for the pointer. :-)