the bad when too many apps are running the music skips when put the ipod in while itunes is playing there becomes static when playing quicktime file on the internet music fast forwards when itunes is open and ipod is connected it freezes and starts again there is no tv shows in library the software v1.2 doesnt download propperly when another program uses sound on the computer the sound cuts and skips The good nice layout tidy more sub headings in source the new ipod device set out and easy tab options new sound bars when you click on the little arrow in the window 3 different views for the list browse down the bottom (tidy) the program runs alot faster feel free to add to the list
Most of those problems you are experiencing arn't really a problem with iTunes but just lack of having enough RAM availible. Given iTunes now is more memory demanding.