Hello, We have a segfault. It's not the newest code, so I didn't opened a jira yet. commit 84d897cb05079a4bfb3ed4ff98df0b5f666e0f70 Date: Thu Jul 22 01:23:06 2010 -0500 I advised to upgrade but it's not going so fast, and I think I found something so I ask before we do the upgarde I saw there were commits in media bug remove code, but I'm not sure it fixes it. http://pastebin.freeswitch.org/14554 The codec is destroyed in switch_core_media_bug_remove_all although switch_codec_ready said it's ready. I found that it could be removed in bug_remove or bug_prune too. In those functions the write lock is locked, but in remove_all it's unlocked before the codec destroy. So I think it somehow the bug remove and session hangup happend in the same time (I'm not 100% sure it's possible) and remove_all tried to destroy the codec that was already destroyed. I think the rwunlock sould go after the codec destroy in remove_all. Please check, and let me know if my theory make sense :) Thanks, Tamas