I recently decided to start using firefox primarily, and I have really been liking it so far. One of the few issues I've had has to do with firefox sync. I originally set up firefox on my desktop and then tried to sync everything to my laptop. I enabled syncing on all possible options (including prefences), but only some things seem to be syncing. One of the two extensions I installed synced properly. All of my history and bookmarks appear to have been transferred correctly. None of my logins or preferences were transferred. Any ideas on what could be causing this?

Edit: Acutally logins were synced; I previously thought it would keep me logged in, although it turns out that it just synced credentials.