Sony Ericsson Xperia X10 Mini (E10i) stuck on boot logo after installing a custom ROM using CWM Recovery
If you unlocked your bootloader and flashed a custom kernel, try:


Hold Home and Power button, phone will restart.
Press back button repeatedly, phone will boot into recovery.
Now
wipe data,
wipe cache,
dalvik chache,
dalvik battery status. In mount n system:
format data,
format system,
format cache.
Now flash your rom zip and after successful flash, reboot the phone.


Note: Always flash the kernel which is given along with the rom