Strange Usenet behavior....(ot)

Some of you may have noticed that I post under two accounts: My ISP
here at work does not have a newsgroups server, so I post under
google.groups with my return address legitimate. My ISP at home has a
newsgroups server, so I post under that with a munged email addy.

But I find that roff is like two almost completely different groups on
the different accounts! I don't have any filters on, and even when I
'show all posts' and download several thousand back posts, there are
threads and posts that appear on one and not the other. I mostly notice
my own, when I post something at work, then look for replies when I get
home. It seems like theres about 20% variance between the two accounts.

Anyone else notice anything like this with their accounts? Any idea
what's happening?

--riverman