Del,
My undertanding is that for 7.2 and the new kernels you should move to latest release. (Jeff, please correct me if I am on a wrong path...)
I am using:
selintra-sail-2.1.14-455
smeserver-asterisk-1.2.10-5
smeserver-asterisk-zappri-MPP-1.2.6-5
sme-ast-en-uk-gpl-sounds-1.0.0-2---Give it a miss if you are using other voices
(whilst I have to say, the English/UK version is really classy... anyone calling our office think they have arrived at No10)
There already is another version out (505), I have not yet tested this one., so cannot comment. However, my experience is that Selintra is very conservative about "stable version" . 455 and the new asterisk rpms represent a vaste improvement on what you are running now. If you have the ability to upgrade (follow the latest guide on the install page at Selintra, no big drama), go for it. Its rock solid.
Hope it helps.
chris