Logic Pro 9 Quantize Flex Problem

I loaded a song I was working and suddenly a quantize window opened, while another one is Creating Overview of an audio track. I was unable to work due to the fact that this procedure is taking TOO long...( more than 7 hours)and I cannot do anything, except restart Logic 9.1.1

HELP !!!

Toño Castillo

iMac 27" 8 Gigs Ram,3.06GHz Intel Core Duo, Logic 9.1.1 MacOS 10.6.3