Has anybody else experienced this? I'm wondering whether it's a bug in dojo which only manifests in Firefox 3, or whether it's a bug in the Firefox 3 javascript engine.
BTW: We can't upgrade to dojo 1.0 because we need the Tree RPC/DnD of 0.4, in case you're wondering.

Compress the dojo build.
The solution posted in the questioner section does not give me the intended result :(
This one came up with accidental.
I know this sound too much hay-wire, but we had the same problem we compressed ff3 with dojo compressor, that worked fine. It reduced the number of file request that helped us to get every thing in one go. So the request reduced drastically. :)
PS: The page loads much faster in ff3 :)
PS: Our uncompressed version is still bombing :D