It seems yet another very bad bug has been discovered concerning the handling of exclude lists, see the advisory;
"Exclude and include lists are being recognized by user and catalog backups. This may lead to unintended exclusions during backup"
http://seer.entsupport.symantec.com/docs/358317.htm
Taken the recent major data loss issue which also related to exclude lists (
https://www-secure.symantec.com/connect/forums/nix-exclude-lists-nb7) I'd say someone hasn't done their home work in the testing and QA areas ... ;)
I'm concerned as we rollout NBU 7 more and more these days... :(
/A