I don't have any solutions for you. This kind of thing drives me NUTS too. I just don't use my i8910 for any serious tasks at the moment (well, for over 2 months now) as there are just too many holes I keep falling into whilst using it.
I've had your problem, too, also, had the problem switching messages to and from e: back to c: will also mess all your messages up too.
I lost all my messages once (learn once, avoid for ever etc.) - I regularly hard reset my i8910, and I've reflashed (as i am doing right now on a special XP PC I built for just my i8910 time-wasting) it now 8-9 times.
The i8910 is a great handset on paper, but it still remains
in use IMHO.
I just use it now and again for basic calls and the 8MP .jpg.
I don't trust it for anything else.
Still, it looks nice tho' *sigh*
Message number 5,356,432,657 from me to Samsung -> please fix this product ASAP. I bought it in good faith and it is too buggy, keeps crashing on me every other day, has completely failed on me (not been able to be rebooted unless reflashed; twice) and has irritated me no end for 2.5 months.
Ah, I feel better now
nzb - sorry for that.
Yes, you can reflash it back - see threads on another website, or in other forums here, on how to do it. Once you get used to it, and oh yes, you will get used to it, reflashing takes about 20 min all. Quite easy if you have an XP box, don't care about warranty issues, and have downloaded the firmware files and read the HOWto's.
PS I go the Italian firmware, upgrade to xxIG2 (fixed AAC .mp4 camera audio) route...