This problem affects me too.  However, its different, it only affects
USB devices on the same IRQ as the SATA_NV driver:

 23:     786792          0   IO-APIC-fasteoi   ohci_hcd:usb2, sata_nv

In my case, that OHCI_HCD (usb hub) is actually an external hub built
into my monitor.  Once I moved my mouse and keyboard away from that hub,
they were no longer affected by this issue.  (However, I still get the
issue, and the computer freezes up while its doing the soft reset).

It seems pretty random, and I scanned for bad blocks on the HDD
(badblocks) and found none.

The other thing different is that for me it didn't completely freeze the
mouse, but it did lower the sample rate to like 2hz, so the mouse moved
very slowly (and typing was very delayed).

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Lost ata interrupt, usb hid (mouse keyboard) freezes
https://bugs.launchpad.net/bugs/576496
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