I did reinstall them I looked for updates I searched the help files. for the past week when scrolling through my thumbs it trys to load the thumbs and is jerky. Before it would always show all the thumbs and was fast but I have tried everything. the only thing I can think of was the latest Service Pack update from windows?
I use the windows picture and fax viewer and picasa...the only time I have problems with picasa is when I have too many pictures...and of course, some update not to long ago...it gets jerky from time to time...I don't think a perfect system is out there...
If you shoot Nikon cameras Nikon View-NX is the way to go, unlike Picture Project or Lightroom you do not have to wait will your photo’s get sucked into their programs, it views the photo’s at the original file locations. You can either view just thumbs, thumbs and a medium size photo, or flip between large photos like a slide show. It does not have any editing features at least none that I use.
I use this viewer to view & delight photo’s only, I edit in Capture NX, Adobe Photoshop, and am just starting to use Lightroom.