Well, personally, I find it alot easier to check ignores from within the dcc-partyline as to scour the userfile for them, but to the issue..
Since the expire timestamp is set, this ignore will expire at dec 17 22:49:07 CET 2008. Of course, you could always use the .-ignore dcc partyline command to remove it manually should you so desire.
As for the last three lines, they're headers for ban, invite and exempt modes.