Summary of resolution:

Current build environment for FreeBSD is based on version 9 of the operating system. Earlier versions of FreeBSD may not work with the server.

FreeBSD bs-freebsd-9-x86_64-1.10gen.cc 9.0-RELEASE FreeBSD 9.0-RELEASE #0: Thu Jan 5 22:56:03 UTC 2012

Tue Oct 22 20:09:39.309 Invalid access at address: 0xcf9b17d50 from thread: conn1

Tue Oct 22 20:09:39.377 Got signal: 11 (Segmentation fault: 11).

Tue Oct 22 20:09:39.653 Backtrace:
0x5932ac 0x59395d 0x7fffffffffc4 0x982425 0x6e0acb 0x91c5d8 0x91c629 0x986a52 0x92f525 0x9270d9 0x8b0ef5 0x8ba52c 0x8bc0b8 0x5a6988 0xc7d627 0xce265f 0x8021e74d1
0x5932ac <_ZN5mongo10abruptQuitEi+988> at /usr/local/bin/mongod
0x59395d <ZN5mongo24abruptQuitWithAddrSignalEiP9_siginfoPv+669> at /usr/local/bin/mongod
0x7fffffffffc4
0x982425 <_ZN5mongo11DataFileMgr12deleteRecordEPNS_16NamespaceDetailsEPKcPNS_6RecordERKNS_7DiskLocEbbb+197> at /usr/local/bin/mongod
0x6e0acb <_ZN5mongo16NamespaceDetails11cappedAllocEPKci+795> at /usr/local/bin/mongod
0x91c5d8 <_ZN5mongo16NamespaceDetails6_allocEPKci+56> at /usr/local/bin/mongod
0x91c629 <_ZN5mongo16NamespaceDetails5allocEPKci+57> at /usr/local/bin/mongod
0x986a52 <_ZN5mongo11DataFileMgr17fast_oplog_insertEPNS_16NamespaceDetailsEPKci+562> at /usr/local/bin/mongod
0x92f525 <_ZN5mongo13logOpInitiateERKNS_7BSONObjE+3221> at /usr/local/bin/mongod
0x9270d9 <_ZN5mongo5logOpEPKcS1_RKNS_7BSONObjEPS2_Pbb+73> at /usr/local/bin/mongod
0x8b0ef5 <_ZN5mongo14checkAndInsertEPKcRNS_7BSONObjE+309> at /usr/local/bin/mongod
0x8ba52c <_ZN5mongo14receivedInsertERNS_7MessageERNS_5CurOpE+2252> at /usr/local/bin/mongod
0x8bc0b8 <_ZN5mongo16assembleResponseERNS_7MessageERNS_10DbResponseERKNS_11HostAndPortE+2776> at /usr/local/bin/mongod
0x5a6988 <_ZN5mongo16MyMessageHandler7processERNS_7MessageEPNS_21AbstractMessagingPortEPNS_9LastErrorE+264> at /usr/local/bin/mongod
0xc7d627 <_ZN5mongo17PortMessageServer17handleIncomingMsgEPv+1175> at /usr/local/bin/mongod
0xce265f <_ZN5boost11this_thread5sleepERKNS_10posix_time5ptimeE+1439> at /usr/local/bin/mongod
0x8021e74d1 <pthread_getprio+337> at /lib/libthr.so.3