is there a possible if lets say you claim the warranty successfully... they gave you a new unit but came with a new bootroom? (which is an ass to jailbreaking)

but seems like even if i really wanna claim warranty will take so much time just like when i book my 3gs =="

what about software problem?? my 3gs facing random crashes during running application or sometimes even opening application or just flipping pages around springboard and typing.... i can claim warranty?