I posted on the sketchup forum but maybe someone here can help.  I have been running sketchup for about 6 months.  Good program.  However, lately it seems to be hanging up when I run it.  I recently upgraded the memory in my computer (comp is about 4 years old).  Now everything is running faster, except sketchup, it’s running slower.  Takes a long time to save something or load something and sometimes it just “freezes” up and I get the little hourglass.  As I said, nothing else is going slow, have checked for viruses but nothing.  And it’s only this program.  Can I uninstall it and then just reinstall it without losing my library and previous work?  Any help would be appreciated.  thanks.