Any ideas why this kernel thread is going nuts?

[Swift Griggs <swiftgriggs%gmail.com@localhost>]

I read the xcall(9) man page, but I still don't see why this kernel thread 
should be taking this much CPU time. It'll go on like this for 30-60 
minutes and I can kill every app I'm running - no change. The main reason 
I know it's happening is that I hear the CPU fan spin up. I can't 
coorelate this to any activity I'm starting or stopping. I've only 
experienced this with the i386 port on 7.0.1.

This is related to me asking the ignorant questions about how to see 
kernel threads and several folks reminded me to either use ps with options 
or top with 't'. Here's the 'top' view with threads expanded:

  PID   LID USERNAME PRI STATE      TIME   WCPU    CPU NAME      COMMAND
    0    34 root     127 xcall/3   89:50 22.71% 22.71% xcall/3   [system]
    0    68 root     126 RUN/3    223:24 11.43% 11.43% pgdaemon  [system]
    0    28 root     127 xcall/2   81:43 10.16% 10.16% xcall/2   [system]
    0    22 root     127 xcall/1   60:01  1.17%  1.17% xcall/1   [system]
    0     7 root     127 xcall/0   63:15  0.63%  0.63% xcall/0   [system]
    0    69 root     124 syncer/2  19:39  0.00%  0.00% ioflush   [system]
 6820     1 sgriggs   85 select/0  19:29  0.00%  0.00% -         fetchmail
    0    37 root      43 i915/3    14:02  0.00%  0.00% i915      [system]
    0     9 root     125 vdrain/0   3:23  0.00%  0.00% vdrain    [system]
    0    70 root     125 aiodon/3   2:57  0.00%  0.00% aiodoned  [system]
    0    71 root     123 physio/3   1:20  0.00%  0.00% physiod   [system]
    0     1 root     125 uvm/3      0:20  0.00%  0.00% swapper   [system]
    0    16 root      96 smtask/0   0:17  0.00%  0.00% sysmon    [system]
    0    11 root     125 cacheg/3   0:06  0.00%  0.00% cachegc   [system]
    0    35 root      96 apmev/0    0:06  0.00%  0.00% apm0      [system]
    0    43 root      96 iicint/1   0:06  0.00%  0.00% iic0      [system]
    0    10 root     125 vrele/1    0:04  0.00%  0.00% vrele     [system]
  575     1 root      85 kqueue/0   0:04  0.00%  0.00% -         syslogd


-Swift