I'm stumped. I've been trying to login in one of my sites, but can't get in from my main computer. It works from an iPad on the same network, so I'm pretty sure the trouble rests with this one MacBook Pro running 10.7.5 (Lion). However, I have cleared cookies and cache, switched browsers, switched users, reset the PRAM, and rebooted all to no avail.
Anyone have any other ideas?