Thread: LockReplace: xid table corrupted and LockRelease: locktable lookup failed, no lock

LockReplace: xid table corrupted and LockRelease: locktable lookup failed, no lock

From
"Kaj-Michael Lang"
Date:
NOTICE:  LockReplace: xid table corrupted
ERROR:  ExecAppend: Fail to add null value in not null attribute sortby
ERROR:  ExecAppend: Fail to add null value in not null attribute sortby
ERROR:  ExecAppend: Fail to add null value in not null attribute sortby
NOTICE:  LockRelease: locktable lookup failed, no lock
NOTICE:  LockRelease: locktable lookup failed, no lock
NOTICE:  LockReplace: xid table corrupted
NOTICE:  LockRelease: locktable lookup failed, no lock
NOTICE:  LockRelease: locktable lookup failed, no lock
NOTICE:  LockRelease: locktable lookup failed, no lock
NOTICE:  LockRelease: locktable lookup failed, no lock
NOTICE:  LockRelease: locktable lookup failed, no lock
NOTICE:  LockReplace: xid table corrupted
NOTICE:  LockReplace: xid table corrupted
NOTICE:  LockRelease: locktable lookup failed, no lock
NOTICE:  LockRelease: locktable lookup failed, no lock
NOTICE:  LockRelease: locktable lookup failed, no lock
NOTICE:  LockRelease: locktable lookup failed, no lock
NOTICE:  LockRelease: locktable lookup failed, no lock
NOTICE:  LockRelease: locktable lookup failed, no lock
NOTICE:  LockRelease: locktable lookup failed, no lock
NOTICE:  LockRelease: locktable lookup failed, no lock

Are these messages serious ? We are having problems with postgres crashing.
Version is 6.5.3 on x86 Solaris.