Had a look at my log and found these recurring log entries:
Dec 22 15:23:06 smbd[3540]: [2015/12/22 15:23:06.422849, 0] smbd/sesssetup.c:1355(reply_sesssetup_and_X)
Dec 22 15:23:06 smbd[3540]: reply_sesssetup_and_X: Rejecting attempt at SPNEGO session setup when it was not negotiated.
Dec...
Been running the 88 with the alphas from Alpha2 to current Alpha4. No issues whatsoever.. I am not a power user so might not be stress testing the unit too much. :)
Just upgraded my AC87U and so far, so good. Not using VPN so no issues there. NTP works fine.
Resetted to factory defaults and restored settings via NvRAM-Save-R21 from .55. Hope thats ok?
Monitoring.
Been using the beta1 for 48 hours and the 87u has hung twice with no access via http or telnet possible. Once occured at 2am and the other at 7am.
I did not reset all settings after upgrading so that might be the cause but just wanted to mention it.
Cannot provide logs cause its totally hung...