My bbv.4 has been slowing like crazy so I started trying different kernels and was getting reboots. I decided to reinstall bbv.4 over my existing without wiping cache or data.
The result was amazing. I reinstalled my theme and battery icon. Then reinstalled the ota block zip. Phone runs much faster and snappier with petes built in kernel .
Still get launcher pro redraw everyonce in awhile but the overall launcher runs much faster. For people having slowdown issues doing this fixed it for me, not sure why.