I have been having problems with my 450d constantly having "BUSY" pop up on the screen and staying there sometimes long enough for me to consider throwing it, I restrained myself. Anyway I figured out it was mostly when I was using my flash. So after some googling i found that it is apparently common from overuse of inbuilt flash or something along those lines. My question is if I buy a speedlite/external flash
( remembering im not wanting to sell a kidney to fund it as its just a hobby for me) will this still happen or is there anything else I can do to fix it?