Actually i confirm this with Linux Mint 13 Mate Debian Edition.
The System freezes after using it for a while (in my case some hours) when an application does heavy i/o.
iotop shows 100% for several minutes, somestimes the sytem even stays unusable. It often happens with chromium, which tends to use the harddisk a lot for caching.
i searched the web for quite a while now, but no real answer. im my case, resarting chromium helps for a while, or restarting the system.
3.2.0-38-generic (#61-Ubuntu SMP Tue Feb 19 12:18:21 UTC 2013) /also appaered with other kernels...
Genuine Intel(R) CPU U4100 @ 1.30GHz
flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm xsave lahf_lm dtherm
Memory 1934 MiB
this seems to be a linux mint debian problem, as with aptosid (also a rolling debian distro) this problem does not occur.