I have an Ibanez AEL 10E and the A string buzzes at the bridge, any idea what could be causing this?
could be the height of the bridge, could be intonation, could be a bad string. Hell could be a bad guitar. Do you hear the buzz through the amp?
Sometimes it's hard to tell where the "buzz" is coming from. If it's actually at the bridge itself, first thing I'd expect was that the "break angle" over the saddle was not sufficient. That the string was laying more-or-less flat over the saddle and producing a sitar-like vibration.
Easy to check...Put your finger on it.
Other sources could be the bridge itself starting to come unglued, one or more bridge pins being loose, a loose brace or bridge-plate under the bridge in the interior of the guitar...