bootmenu always comes cuz theres a new app installed that changes kernels...

eg, when the phone is off, you plug it to the charger and bootmenu comes up.

it would let u pick which kernel do you want the phone to.

i pick the n900 kernel cuz nitdroid sometimes dont charge.

and for the _ problem, reboot and do not turn ur phone upside down or 90 degrees while booting cuz its gonna crash and u get the _ problem