[ic] spiders/logging

[DB]

My catalog's access log has many entries like the following which appear
to be caused by spiders. They don't seem to be much of a problem, but
I'm curious what these entries mean. Is it a failed search, for example
for an expired session, or maybe something to do with spiders not having
a session assigned?

123.123.123.123 nsession:123.123.123.123 - [15/September/2010:12:14:38
-0400] store
/cgi-bin/store/scan/MM=f6bfbefe9ff41ee8d877f715bb157e03:5500:5549:50.html search
error: Object saved wrong in
/catroot/tmp/n/nsession.f6bfbefe9ff41ee8d877f715bb157e03 for search ID
nsession.f6bfbefe9ff41ee8d877f715bb157e03.