Yes same problems here .. I have no idea what it is .. there is no significant network traffic involved, no noticeable CPU activity (i run iStat menus and check all the stats when AC hangs .. according to them and Activity Monitor nothing is going on).
Are you running TW?
What is your network setup?
Machine specs, BIM Server specs, etc ..
Despite what they say about being more efficient in network usage than it used to be I still believe AC does far more talk than is necessary ... there is constant checking in with both the BIM server manager and the AC license key server that is over the top IMO. I suspect some sort of network traffic issues combined with AC expecting to constantly be tethered to the above two items causes it to go into these frequent spins.
Of course you may be about to prove me wrong by saying you're not running a TW file and have the dongle plugged into your local machine?
cheers,
owen
cheers,
Owen Sharp
Design Technology Manager
fjmt | francis-jones morehen thorp
iMac 27" i7 2.93Ghz | 32GB RAM | OS 10.10 | Since AC5