To reassure Cactuspete, this has been an ongoing "problem" for me (not really a problem, can't think of another word, perhaps inconvenience and even that sounds strong).
I will access a multiple-page OMNI thread from the FT Travel section. After reading posts, I find myself returned to the FT Travel section.
Also, the FT Travel section often lists OMNI posts as having more pages than they do (# of pages +1).
I am not using a firewall and my sessions at FT are not interrupted by visits to other sites (at least not in these cases).
Mac G4 Cube, IE 5.01