as you can see from the man page, remove_dotf is (supposed to work the) same as the bpcatrm.
yes, it makes sense now, NBU is failing to see anything's been archived, so it has not removed anything, and your catalog backup is still the same size - which is all wrong, of course
you run bpcatlist -offline (did you run it without piping to bpcatrm, just to check?) and it says 227 no entity found ... definitely it has troubles seeing those archived files as in offline status, for some strange reason
you performed backup again - this time, was it with the remove_dotf, like I suggested?
after all, I think all this may really have something to do with the alt images directory on F drive - bpcatlist and bpcatrm may have some bugs so that it does not really work well with the alt images directory
looking at the admin log and talking to SYMC Tech Support are two options I can think of
oh, the "Standard" policy type is for UNIX, your master is Win, so MS-Windoes-NT should be fine, don't worry about the document 274027.
OK ... I was about to hit the Save button for this comment, and just then I found this technote, which says "windows master sometimes fails to bpcatrm properly"
at first it may not look like your situation, but keep reading on - I think this will solve your catarc problem
http://support.veritas.com/docs/295569
Good luck mate!
Abe