We have an Asterisk 11.5.1 server, running FOP 2.28. Our users are set up in a hotdesking configuration, which I've previously described here: http://forum.fop2.com/conversation/post/4634
FOP has been working pretty well for the past 2 years (mostly on 2.24 or 2.26 during that time). At some point within the past 2 months, we've started having intermittent problems with some (but far from all) users not displaying their call detail information on their "button" in the extensions section. At first it seemed like it was just newly set up users, so I kinda back-burnered working on it. Recently, however, we swapped the physical phone for one of our established users, and he is now effected by the problem (and a couple of the most recent new hires are working just fine).
I've verified that my configuration files are still the same as they were when I had it working as referenced in my previous thread. The upgrade from FOP 2.26 to 2.28 did not change the behavior (although it did wipe out my autobuttons.cfg file and didn't back it up correctly, which is probably a separate issue). Any suggestions on where I should start looking, or where there might be logging to help run down what's happening?