Index: apps/app_meetme.c
===================================================================
--- apps/app_meetme.c	(revision 127753)
+++ apps/app_meetme.c	(working copy)
@@ -1424,16 +1424,20 @@
 
 	if (confflags & CONFFLAG_RECORDCONF) {
 		if (!conf->recordingfilename) {
+			ast_channel_lock(chan);
 			conf->recordingfilename = pbx_builtin_getvar_helper(chan, "MEETME_RECORDINGFILE");
 			if (!conf->recordingfilename) {
 				snprintf(recordingtmp, sizeof(recordingtmp), "meetme-conf-rec-%s-%s", conf->confno, chan->uniqueid);
 				conf->recordingfilename = ast_strdupa(recordingtmp);
-			}
+			} 
+			conf->recordingfilename = ast_strdupa(conf->recordingfilename);
 			conf->recordingformat = pbx_builtin_getvar_helper(chan, "MEETME_RECORDINGFORMAT");
 			if (!conf->recordingformat) {
 				snprintf(recordingtmp, sizeof(recordingtmp), "wav");
 				conf->recordingformat = ast_strdupa(recordingtmp);
-			}
+			} 
+			conf->recordingformat = ast_strdupa(conf->recordingformat);
+			ast_channel_unlock(chan);
 			ast_verbose(VERBOSE_PREFIX_4 "Starting recording of MeetMe Conference %s into file %s.%s.\n",
 				    conf->confno, conf->recordingfilename, conf->recordingformat);
 		}
@@ -1522,12 +1526,14 @@
 	ast_mutex_unlock(&conf->playlock);
 
 	if (confflags & CONFFLAG_EXIT_CONTEXT) {
+		ast_channel_lock(chan);
 		if ((agifile = pbx_builtin_getvar_helper(chan, "MEETME_EXIT_CONTEXT"))) 
 			ast_copy_string(exitcontext, agifile, sizeof(exitcontext));
 		else if (!ast_strlen_zero(chan->macrocontext)) 
 			ast_copy_string(exitcontext, chan->macrocontext, sizeof(exitcontext));
 		else
 			ast_copy_string(exitcontext, chan->context, sizeof(exitcontext));
+		ast_channel_unlock(chan);
 	}
 
 	if ( !(confflags & (CONFFLAG_QUIET | CONFFLAG_NOONLYPERSON)) ) {
@@ -1711,10 +1717,13 @@
 	if (confflags & CONFFLAG_AGI) {
 		/* Get name of AGI file to run from $(MEETME_AGI_BACKGROUND)
 		   or use default filename of conf-background.agi */
-
+		
+		ast_channel_lock(chan);
 		agifile = pbx_builtin_getvar_helper(chan, "MEETME_AGI_BACKGROUND");
 		if (!agifile)
 			agifile = agifiledefault;
+		agifile = ast_strdupa(agifile);
+		ast_channel_unlock(chan);		
 
 		if (user->zapchannel) {
 			/*  Set CONFMUTE mode on Zap channel to mute DTMF tones */