My Firefox account seems to have got itself in a state where it repeatedly messes up the order of my bookmarks on the toolbar. It doesn't matter how many times I put them back in the correct order, the next time it syncs, they get moved around. Deleting the bookmarks in question isn't an option, since one of the items getting moved around is a folder containing a large number of individual bookmarks. I have tried correcting this manually on every copy of Firefox signed in with the Sync account, but it stubbornly moves them back to where it wants on the next sync attempt. Has anybody else seen this behaviour?