Out of all the cameras I have worked with, axis has the record for firmware glitches. The 207 in 2007 would stop recording after 30 days. Downgrade firmware. The 241q in 2008 would send motion events (24 encoders) 10 seconds off to vms. Downgrade to 4.40 firmware. The m3208 cameras since 2010 will freeze up if frame rate over 6 fps. (60 cameras multiple sites). No help available on this. The p3301 camera used for video and audio in interview room 2012 would not sync and would freeze. Upgrade with some custom firmware. I can not recall any such problems with all of the other cameras I have used. (pan, Pelco, arecont, ACTI, Vivotek, hikvision, Vivotek, Bosch, and others).
Check on the firmware or go to a better camera product.