We're seeing a few of these and wondering (a) if they are a known
problem and (b) what we should do to help track it down if it is not a
known problem:

2005-09-12 12:22:14 EST FATAL  dstring_addchar: realloc() - Cannot
allocate memory2005-09-12 12:22:14 EST DEBUG1 slon: shutdown requested

2005-09-12 14:00:49 EST FATAL  dstring_nappend: realloc() - Cannot
allocate memory2005-09-12 14:00:49 EST DEBUG1 slon: shutdown requested