You voided the warranty when you installed a non-stock kernel from extras-devel. They will probably not help you unless at least you first reinstall the factory-stock kernel. But if you do that you won't need Nokia's help anyway.

http://wiki.maemo.org/Kernel_Power#Deinstallation (look down a bit for instructions for non-booting phones)

From Titan himself: http://talk.maemo.org/showthread.php...777#post869777

Bottom line: If you don't know exactly what you're doing and why you're doing it - don't be doing it!