MC Logo out of place

Hi all,m
Im having a weird problem with me Flash site, I got a logo within a MC that seems to appear out of place with Internet Explorer.

I had to place the MC more to the left of the actual place that I want it to appear so that after exporting the .fla to .swf it would appear fine (I know, a messy solution will lead to messy results). Now when O upload to the server, some visitors are seeing it out of place.

Can anyone see this error, and any ideas on why it is happening? the site is the logo in on Top left (Brazil flag, with white circle and words). Many thanks!