NewsMonster 1.2.2 was released today. This time around, NewsMonster is just one product (PRO) and is available for free.
I haven't tried the new version and unless FeedDemon disappoints me, I may not be upgrading.
(Updated on Saturday 25 October 2003: I have just found out that NewsMonster has a Mailing List, therefore, if you wish to upgrade to Mozilla 1.5, it may be worth checking it out.)