I tried a couple different WinXP and Macs with combinations of IE7, IE8, Firefox, Chrome, and Safari browsers using
http://www.texasoffroad.net/forum/ubbthreads.php/topics/451442/Who_Where_When#Post451442 as the test and they all worked fine once I logged in and told it to remember me - at the login and the browser prompt.
Interesting thing about the test thread was that the first few images were the only ones to show a broken link and the ones from deadtokevin were always there.
Have you tried deleting your temporary internet files? Maybe time for some cleanup.
Great pics BTW. I hope to ride more West TX events this year. It's a long way out there from Bossier City, LA. Concho 2009 was my only event west of RRDR and it was a blast. I'll be there again next month.
Thanks,
-Curt