Trivial things first
Your #interface: line has an invalid number (it won't break your addon but it'll make it show up as "out of date" on all clients)
11304 (classie/era)
30401 (wrath)
100005 (mainline) are valid numbers.
Secondly the snippet you posted won't help someone give you feedback.
The function looks ok (could use `AuraUtil` to do the buff / debuff scanning in a better way but that's not essential to your problem)
It is
what you do with the actionbars after you get the information back from your function that we need to see.
Actionbuttons are secure and several actions are prohibited (move/show/hide/scale/re-anchor) outside the constraints of secureheaders and such.
TL;DR: Show your whole code / link to your addon or at least the parts that "touch" the actionbars/actionbutons.
Edit I can see the rest of the code now, not sure if edit or I missed it the first time.