I love Calibre and have upgraded to version 4.
However, I can't get on with the new Viewer. I always use the viewer to see what my finished ebooks look like but I find as I scroll through the just finished ebook I keep seeing the dreaded pizza wheel of death. It seems, the new viewer cannot keep pace with my scrolling.
So I have installed Calibre Portable v 3.48 and have associated it's book viewer for my viewing.
Problem solved.
