What does threadid bogus mon mean?

I am using a ScheduledThreadPoolExecutor and when I have multiple scheduled threads running I am getting threadid=xx: bogus mon 1+0>0; adjusting in开发者_开发技巧 LogCat.

Can anyone shed any light on what this means, is it bad and if so how do I stop it? Thanks.

Here's a link for the source for it... looks like something's trying to wake a thread that's not actually waiting. If nothing else is going wrong it's probably harmless.

http://google.com/codesearch/p?hl=en#oOy_5JrVRNM/trunk/dalvik/vm/Sync.c&q=android%20threadid%20bogus&sa=N&cd=3&ct=rc&l=530