I had flashed tiamat 1.4.0 and it starting running slower and slower till it forced a reboot. When it rebooted it froze at the lock screen. So I reflashed the stock image, re-rooted it and flashed this kernel. It now runs OK but seems to get really slow at times for some reason to where things just barely load at all. I use es widget to kill all and it works good for a minute or two then right back to barely being resonsive. I am wondering if you might be able to look further into the kernel and see if there is some kind of memory leak happening. It seems to be happening randomly to some people using both your kernel here and tiamat.
I am currently running your version since it works better although it still seems to have about the same problem. I do think I noticed that setcpu is sometimes not getting su permission until I physically go into the app after a reboot.
I have a 3g verizon xoom.
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