[CentOS] CentOS 6.4 Samba 3.6.9 Regression

Anyone know the reason RHEL bumped Samba from 3.5.10 to 3.6.9? This version
has a regression with BackupExec and Veeam backing up to network shares. I
receive access denied errors. Samba is in security=user mode and not joined
to a domain. If I downgrade just the Samba packages to the CentOS 6.3
version 3.5.10 everything works again. I've found a couple of bug reports
and the one suggested fix "acl check permissions = no" doesn't work.

https://bugzilla.samba.org/show_bug.cgi?id=8414
https://bugzilla.redhat.com/show_bug.cgi?id=918537

Thanks,
Ryan