What happens when you click the link to amend the subscription? I can't say I ever experienced this issue when we had SQL 2008, however, it sounds a bit like what happens when you "accidently" amend the subscription XML in the SQL database. Could your DBA check this, and see that it looks ok?
Thom~
Excuse my typos and sometimes awful grammar. My fingers work faster than my brain does.
Larnu.uk