Hi Rich,
I sure haven't noticed any differences. Your description would indicate a focusing problem or camera shake, or it could be the ISO setting. I think the upgrade may reset the settings, so you may want to check the ISO setting, the low light infared focus setting, and other items that may have been changed. It's possible you have just had different lighting conditions before and after, so you are getting different exposure settings, especially if you are using automatic settings.
This is from Douglas Adams, author of the "Hitchhikers Guide to the Galaxy" series. In one book in the series, "Deep Thought", the most massive computer ever built, is asked to solve the answer to "Life, the Universe, and Everything". After pondering for thousands of years, the answer was:
No problem!
My experience level is really quite low, having just started dabbling with the various settings that are available on digital cameras - after always relying entirely on Auto, P&S sort of picture taking.
You're telling me! No scene is quite the same from one day to the next (or even from one hour to the next) due to variations in the level of available light etc., which means that one is constantly having to experiment with the camera's settings to get the best possible shot. I can see that it really is very much a case of trial & error!
Thanks for correcting me! No wonder my posts haven't been so helpful!
but yes practice, change a setting, practice, observe results, repeat 
My experience is that I thought I had throwen money away when I bought the camera. After upgrading I knew that wasn't true.
I guess that we can't always be 100% certain what "OK" really is - e.g. can something be made even better? Although the above items may have seemed ok to me at the time, it was very much a case of 'what if...' What if things could be made even better with an update? This, of course, is something that we never know until we try.
