Takes for ever to export?

I can’t figure out why a 500k simple file takes over 4 minutes to publish on a G4 tower!!!

Simple enough file - some masks, some simple animation, few bitmaps, no sound.

A combination of text anti-alliacing options is used (from none to "for readability).

Any suggestions what to look for???

Thank you in advance - all comments are much appreciated.

Yojik