WGT,
I have a similar situation as a couple others I have seen today. To reset my settings and do some testing with the Adobe flash applet, I cleared my browser cache as well as the flash cache and deleted all sites saved in flash. Loaded the game client and it started loading and got stuck at 73% for about 10 minutes, so I shut it down. Went back to wgt and now have no 'client launch' section on the left. Every page load or refresh, it flashes 100%, then disappears, and the left pane never loads.
Here is a screenshot showing what I am describing:
Any chance your servers are not sending out the complete game info once the caches are cleared, this seems to be a common denominator, but it's just a wag.
If it helps, when the game client did try to load and got stuck at 73%, it said it was downloading from media5.wgt.com