There is a size limit on photo uploads. In the "manage upload" screen (accessed through the Paperclip icon) there are the size limits. If you have high rez photos you may only be able to upload one or two at a post.
Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW