Version:            (using KDE KDE 3.1.2)
Installed from:    Debian testing/unstable Packages

from debian bug report #194652 by Steven Fuerst

On some occasions, every character you type into the url bar is sent out as a 
DNS packet.  Over a slow link, this is really annoying.  Sometimes, this 
causes the browser to freeze up until the timeout on the dns lookup is hit.

Example:  Type http://news.gggggggggggggggggggggggggggggggggggg

You should see a new packet for every 'g' if you use tcpdump on the link, and 
it may hang for a couple of seconds or even longer.

Konqueror should probably wait until you press enter to see if the url is 
valid instead of looking at the partial results.