Don't fix it! Make people switch to Netscape 6 so Netscape 4 will finally die and web developers around the world will rejoice!
Ok, so I'm being selfish. Fix it if you must.
---Edit---
Actually it doesn't freeze completely, it just takes a really long time to bring up the page. It's because of the way the BB software lays out the pages (multiple nested tables). The only way to eliminate the delay is to completely rewrite the layout. That's probably not gonna happen.