You really should upgrade to pr1.3 alot of apps are now compiled for it, especialy anything related to the kernel.

But it amazes me how people who are adversed to upgrading/flashing install things from devel without at least looking at the change logs.
There is nothing wrong with using extras devel, almost all the apps i use come from there, but you really need to take the time to look at what your updating and why, because something is the newest release doesn't automaticaly mean its better and could quite possibly brick your phone.
I only say this because ive learned these lessons the hard way