I recently started out using X2 for my site
http://www.rvd-fotografie.nl
and have got to deal with the sticking preloader bar a lot.
It usually occurs the first time starting a new browser window. Refreshing the window (F5) does fix it most of the time, not always.
I've tried the possible solution by disabling the SWFaddress module option, with no result.
Tested it out on a few computers and the following browsers:
Internet explorer 8
Google Chrome 4.1.249.1036
PS3 Internet explorer
It kept on recurring
Could someone help me out?