I got something similar from apache2, but it didn't core dump.
Are we the only OS who gets angry about this sorts of errors?

On 9/29/05, Rui Paulo <rpaulo@fnop.net> wrote:
> On 2005.09.29 13:55:11 +0200, haad wrote:
> | i am student and for my work in school i need cad utility for writing
> | VHDL  sources.
> |
> | So today I try to install cad/electric everything compiled fine but whe=
n
> | i try to tun it I receive this error
> |
> | electric: Error detected by libpthread: Unlocking unlocked mutex.
> | Detected by file "/usr/src/lib/libpthread/pthread_mutex.c", line 345,
> | function "pthread_mutex_unlock".
> | See pthread(3) for information.
> | Abort (core dumped)
>
> This is a problem with electric, most likely.
> You can try running it this way:
> ``env PTHREAD_DIAGASSERT=3DA electric''
>
> This will ignore pthread errors but be careful as these errors
> normally indicate bad programming.
>
>                 -- Rui Paulo
>
>
>