The Imagebrowser (v2.3.6) software that came with my Canon Powershot
A200 causes my finder to crash, providing me with the colour wheel
until I restart my computer. After restarting my computer this problem
will occur again. It will occur about a minute after restart when
trying to open files, programs, ect.
I thought it might be some sort of conflict with an old version so I
updated to the latest version (v2.7) but the same problem occured. The
only way I could fix the problem was by booting up into OS 9 and
erasing all traces of the installed software.

Can you live without ImageBrowser and use the inbuilt Mac OS X Image Capture or iPhoto?

If not, have a look in the console logs and see if there are any reports on what's causing the crash.

Have fun,
Shay