Hi, we're http://www.learnoutloud.com and our site started acting sluggish this weekend. We've experienced no spike in traffic nor have we made any major changes so we're quite puzzled as nothing like this has happened before. We're LAMP (Linux Apache MySQL PHP) and the problem seems to be only on certain IP addresses as for the computers at our office the speed of the site is normal but on my home computer it's very slow. All other sites are fine for me, but audio downloads from our site are coming in at 4 KB/s when at the same time on other sites they're usually 400 KB/s or more. We've talked with our hosting company and they claim that all is normal on our server. Any ideas as to what is going on here would be greatly appreciated.
do you have any shell access? login via shell, check what are the process running. or if you are using cpanel/whm, check your cpu/mysql usage in the whm.