If this only happens when you visit the library browser than I would check to see if there are self referencing links in the library directory tree. E.g. a link down a level in the library tree that points back to the top level.
This happens from time to time and can cause infinite loops. I don't know if that is what is causing the symptoms on your machine.
Very slow to reload!
This forum has a limit to the number of forum postings you can make in a given time period - this is currently set at 10 posting(s) in 1 day