QUOTE(ParasitAmol @ Jun 25 2009, 08:29 AM)
yes,just exactly what i thought..when we're operating the memory card then all application related to it will stop..i just panicked back then and without hesitating posted my problem..
one more problem is i cant press the 2 buttons at the home screen which is the contacts list button and the button to dial a number..nothing happens when i touch it..what is the problem?

Have you tried default theme? Or reboot your tube? If fail also, try reset your phone (*#7370#) make sure backup all your data.
QUOTE(nagaraputra @ Jun 25 2009, 10:04 AM)
yes, after checked my mem. card...i'm using class 2 mem. card..
any problem about this type of mem. card?
can i get back all those files gone even after backup?maybe it was hide somewhere?
As far as I can see the Class 2 mem.card is not compatible with our tube. I read at nokia europe discussion board. There's had some issue with Class 2. If lucky, nothing happen with it, but mostly it probably the cause of data corruption in memorycard. So, if your warranty is still valid in 3month, go to Nokia Care Center to replaced it for you, but first, give them a call to ask them is the memorycard class 4 or 6 available in their stock.