Does it lock up on pages that have just basic Text and Pictures ?
You can try updating your Flash Player - that may be causing the problem.
I think Chrome is meant to have a built in flash player, But it may be working incorrectly ? Easy way ti find out, open chrome, in the address bar type in about: plugins (No space all one word, damn simile comes up with :P ) look for the flash -- whats it using ? just checked on mine Heres what I got