There is a strange behaviour in my laptop, sometimes when I want to open a site, say stackoverflow.com, my browser stays "looking for" or "waiting for" that domain. Apparently doesn't find it right away.
What I usually do is ping that domain and after a moment the browser responds (sometimes its necessary reload the page).
I'm running Firefox 3.0.6 on CentOS 5.3, I have an ethernet connection to a WRT54G v5 router that is connected with the radio modem (Wifi).
I don't know if this is a very generic question, but I want to know if it happened to someone else out there.