Try rule pair +www.imdb.com/* +*.imdb.com/* , check that you have inputed your
login through Httrack itself, and first and most of all BE NICE or a large
site like that may throttle you. So try just 1 or 2 simultaneous connections
and 1 or 2 connections per second, I would go for 1 each. Many large sites
will note if you're robo-overloading them and will throttle you back
accordingly..

This is just general help, you need to try to crack the nut yourself by
analyzing what is downloaded and what is not. Go through the log file and see
what happens, put debug option on.