freebsd stable - Dec 2016 - negative number of logins

Hi,

See this forwarded status message from this morning below. Funny numbers.

$ uname -a
FreeBSD sheeva2.klop.ws 11.0-STABLE FreeBSD 11.0-STABLE #25 r308727M: Wed  
Nov 16 13:46:35 CET 2016      
root at sjakie.klop.ws:/usr/obj-arm/arm.arm/usr/src-arm/sys/SHEEVAPLUG  arm

$ w
  3:44PM  up 1 day, 17:57, 1 users, load averages: 0.08, 0.07, 0.02
USER       TTY      FROM                                      LOGIN@  IDLE  
WHAT
ronald     pts/0    klop.ws                                   3:43PM     -  
w


Cheers,
Ronald.


------- Forwarded message -------
From: "Charlie Root" <root at klop.ws>
To: root at klop.ws
Cc:
Subject: sheeva2.klop.ws monthly run output
Date: Thu, 01 Dec 2016 05:30:02 +0100


Doing login accounting:
	ronald                              35.24
	total                            -72020.26
	root                             -72055.50

Security check:
      (output mailed separately)

-- End of monthly output --

After about 6 nov 2016 stoped work powerd++

at the start:
# service powerd++ start
Starting powerdxx.
powerd++: (ENOFREQ) at least the first CPU core must support frequency
updates
/usr/local/etc/rc.d/powerd++: WARNING: failed to start powerdxx

System:
FreeBSD alex.super 11.0-STABLE FreeBSD 11.0-STABLE #34 r309348: Thu Dec
1 12:06:52 +07 2016     alex at alex.super:/usr/obj/usr/src/sys/ALEX  amd64
kernel similarly GENERIC

Processor:
CPU: AMD FX-8370 Eight-Core Processor                (4018.43-MHz
K8-class CPU)
  Origin="AuthenticAMD"  Id=0x600f20  Family=0x15  Model=0x2 
Stepping=0

Features=0x178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2,HTT>

Features2=0x3e98320b<SSE3,PCLMULQDQ,MON,SSSE3,FMA,CX16,SSE4.1,SSE4.2,POPCNT,AESNI,XSAVE,OSXSAVE,AVX,F16C>
  AMD Features=0x2e500800<SYSCALL,NX,MMX+,FFXSR,Page1GB,RDTSCP,LM>
  AMD
Features2=0x1ebbfff<LAHF,CMP,SVM,ExtAPIC,CR8,ABM,SSE4A,MAS,Prefetch,OSVW,IBS,XOP,SKINIT,WDT,LWP,FMA4,TCE,NodeId,TBM,Topology,PCXC,PNXC>
  Structured Extended Features=0x8<BMI1>
  SVM: NP,NRIP,VClean,AFlush,DAssist,NAsids=65536
  TSC: P-state invariant, performance statistics

Cool'n'Cuiet in BIOS enabled
"Turbo mode" for processor disabled