asterisk users - Apr 2006 - Voicemail Issue - Failed to lock path

What would cause this? It happened out of the blue:

    -- Executing VoiceMail("Zap/3-1", "u326@default") in new
stack
    -- Playing 'vm-theperson' (language 'en')
    -- Playing 'digits/3' (language 'en')
    -- Playing 'digits/2' (language 'en')
    -- Playing 'digits/6' (language 'en')
    -- Playing 'vm-isunavail' (language 'en')
    -- Playing 'vm-intro' (language 'en') Apr 18 11:11:41
WARNING[15841]:
app.c:1164 ast_lock_path: Failed to lock path
'/var/spool/asterisk/voicemail/default/326/INBOX': File exists Apr 18
11:11:41 ERROR[15841]: app_voicemail.c:5569 vm_exec: Could not leave
voicemail. The path is already locked.
Apr 18 11:11:41 WARNING[15841]: app_voicemail.c:5573 vm_exec: Extension
3326, priority 103 doesn't exist.
    -- Executing Hangup("Zap/3-1", "") in new stack
  == Spawn extension (internal, 3326, 3) exited non-zero on 'Zap/3-1'
    -- Hungup 'Zap/3-1'


Sincerely,

Brent A. Torrenga
brent.torrenga@torrenga.com

Torrenga Engineering, Inc.
907 Ridge Road
Munster, Indiana 46321-1771

+1 219 836 8918 x325 Voice
+1 219 836 1138 Facsimile
www.torrenga.com