"rebooted because of kernel failure" is not a general bug, it's a system-specific problem. did you send a supout.rif to support?
I already send a 3.10 supout file as showed here:
http://forum.mikrotik.com/viewtopic.php?f=3&t=24422
and with me, also other people do the same.
I recived in reply from support some like "rb133c it's a simple hw... keep it simple and uninstall unused packages".
I usually uninstall all unuseful packages for me and i get a better cpu performance (from 100-80% with all packages to 3-20% with only the necessary), but for the kernel failure nothing change. And i think isn't nice to have a kernel failure... something somewhere isn't working correctly.
Now i send again a supout file and hope that someone at Mikrotik look at it.
But... a question turn around in my mind: i think this is a problem for all the rb133c (and, reading this forum, also for other rb), not only for mine so, why at Mikrotik nobody see this? They don't test the software before release on every rb? Just rebulid and upload?
A Kernel failure it's a Kernel failure! Not just an implementation error of some parser or things like this
!