[SLL] Slow DNS lookups

[Mike Stunes]

Recently I've been having an issue with name lookups, particularly from 
Firefox, taking much longer than they used to. Seems like it used to be 
pretty quick, and now navigating to a different site takes several 
seconds, usually about four or five. (If I remember right, this has been 
going on for a few days, maybe a week or so.) Once Firefox gets past 
"Looking up ...", however, it's a breeze. I can't figure out what might 
have changed that would cause this--I don't remember having done any 
major software updates or config changes about the time this started, 
and /etc/hosts and /etc/resolv.conf look fine. Wireshark shows an 
interesting story-- first, an AAAA record lookup, followed by an AAAA 
record lookup on <domain-name> + ".mit.edu", followed by an A record 
lookup, which finally works. Don't know if it did that before or not. 
Does anyone have any idea what might be going on? Thanks in advance!

Mike