060810 12:39:52 [Note] /usr/sbin/mysqld: ready for connections.
Version: '5.0.21-standard-log'  socket: '/var/lib/mysql/mysql.sock'  port: 3306  MySQL Community Edition - Standard (GPL)
mysqld got signal 6;
This could be because you hit a bug. It is also possible that this binary
or one of the libraries it was linked against is corrupt, improperly built,
or misconfigured. This error can also be caused by malfunctioning hardware.
We will try our best to scrape up some info that will hopefully help diagnose
the problem, but since we have already crashed, something is definitely wrong
and this may fail.

key_buffer_size=8388600
read_buffer_size=131072
max_used_connections=3
max_connections=100
threads_connected=1
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_connections = 225791 K
bytes of memory
Hope that's ok; if not, decrease some variables in the equation.

thd=0x8a9d600
Attempting backtrace. You can use the following information to find out
where mysqld died. If you see no messages after this, something went
terribly wrong...
Cannot determine thread, fp=0x1f0bec, backtrace may not be correct.
Stack range sanity check OK, backtrace follows:
0x815c838
0xc5d888
(nil)
0xb564ea
0xb5cc6f
0xb5cfea
0x814ea29
0x8152d66
0x815c578
0x817a9f3
0xc57371
0xbc29be
New value of fp=(nil) failed sanity check, terminating stack trace!
Please read http://dev.mysql.com/doc/mysql/en/Using_stack_trace.html and follow instructions on how to resolve the stack trace. Resolved
stack trace is much more helpful in diagnosing the problem, so please do
resolve it
Trying to get some variables.
Some pointers may be invalid and cause the dump to abort...
thd->query at (nil)  is invalid pointer
thd->thread_id=2
The manual page at http://www.mysql.com/doc/en/Crashing.html contains
information that should help you find out what is causing the crash.
060810 13:24:34 [Note] /usr/sbin/mysqld: Normal shutdown