Comment 4 for bug 163042

samba 3.0.22-1ubuntu3.4 breaks things, 3.0.22-1ubuntu3.3 is OK.
samba-3.0.22 /source/lib/charcnv.c is where the panic comes from:
      /* No longer allow a length of -1 */
       if (dest_len == (size_t)-1)
              dest_len = sizeof(pstring);
              smb_panic("push_ascii - dest_len == -1");