I hae my digital camera set up to auto-rotate images so that they always display the right way up. Gnome file manager handles these correctly; firefox 3.5.4 (shireoko) alwasy display the iamges in landscape. Reproducible: Always Images attached.
Created attachment 237619 [details] Look at dsc_256 and dsc_261 Note that firefox gets a few right, but more often than not they are wrong.
I have spoken with a few upstream devs and this is not something that will be resolved in firefox. Firefox was intended for web use not local file browsing.