On Ubuntu Gutsy, with FF2, I get a perfectly fine rendering. On Ubuntu Hardy, with FF2, I also get the right layout.
On Ubuntu Hardy/FF3.0b3pre, I see the same behavior as you do.
On Ubuntu Gutsy, with FF2, I get a perfectly fine rendering. On Ubuntu Hardy, with FF2, I also get the right layout.
On Ubuntu Hardy/FF3.0b3pre, I see the same behavior as you do.