alatown, what is the width of your primary column? Subtract left+right padding from that. If it is less than 500, the flash embed will break your design.
edit: I just went to your site alatown and it seems as though your primary column is very close to, if not 500px wide (just eyeballing it). Try decreasing the padding on both sides of the .primary by 1px each. I think its just barely too tight, maybe loosening the padding would help.
