Yes thats so true. Its more of the physical handicap of the 8310 thats the limitation. i just updated my new 8310 to OS 4.5 and everything is good so far. But i wonder why rim makes these phones with such low memory. After all memory chips and such hardware is only getting cheaper by the day. I dont see the point unless its a marketing ploy.
The 8520 if im right has 256mb but i personally didnt like the shape. I mean its just flat and black all over. I like the dual tone design of the 8310.