query browser hanging up

I've installed the latest release of Query Browser and it's been working
fine up until this morning.  While deleting some rows from a test table,
the browser became hung.  I closed the browser and since that time,
whenever I try to open query browser, I can log on then it appears that
the browser just goes into a loop ( no browser window yet it's using 99%
of the system resources).  I've uninstalled the browser, administrator
and MySQL and reloaded each.  The problem still persists.  As far as I
know nothing else has changed in the environment.  
 
Any ideas?
 
Mike Bowers