This just cropped up a day or two ago and I'm not sure what to do about it. Using Safari v5.05 on an older Macbook Pro (Santa Rosa Core 2 Duo) running 10.5.8. It seems like anything that causes Safari to interact with the internet makes the browser to freeze until the HTTP request is done. New pages, AJAX calls, whatever. Clicks aren't registered until many seconds later. Can't switch tabs, even unloading pages takes second or two. Beachballs are frequent but only last about a second. Everything just halts every time you click something. It's really freakin' annoying. I've moved to Firefox and everything loads at normal speeds, clicks are registered fine. Any other application I use works normally. CPU and memory usage is normal, there's plenty of disk space available. I've reset Safari and restarted my computer. That improved things slightly but it's still too annoying to use Safari. I've not installed any new software or made any changes to my system or Safari preferences in a while. Other devices aren't having any difficulty, just Safari on this computer. Mystified. Any help?