This problem still exist.
Virus and Security forum updates catagory
Message count reads 24 of 25 the only option is "previous message"
Message 24 is Windows Defender and it only has the option of "previous" there are no "next message" or "unread message" even though the message 25 which is Tauscan has not been read.
This is from 4/13/06 updates.
Using Firefox Browser this only happening in V&S updates.
This has been previously reported on 3/20/06