Guys, I run 4.1.2 with no problems. I'm as up to date as possible. 4.1.2 is based off RH 6.2, as a result, use RH 6.2 errata's website:
http://rhn.redhat.com/errata/rh62-errata.htmlAdditionally, I use RPM packages provided by Troels Arvin:
http://rpms.arvin.dkIt's really not Mitel's responsibility to provide updates and errata fixes for outdated distributions, and to be quite honest, Mitel is rather lax in providing timely updated packages to fix security issues (no offense).
If you're going to continue to run 4.1.2, be sure to check RH's errata website in addition to Troel's website or any other producer of RH 6.2 RPMS. Additionally, if you're not watching a website like
http://www.securiteam.com (or an equilivient) then you're not doing a good job as a server administrator.
Hope this helped,
Nathan