Why Does Nivo Slider Run Slow in IE7 & IE8? Solution Here:
If you’ve ever used Nivo Slider you may have noticed that in some cases it runs slower in Internet Explorer 7 and 8, while running as expected in Firefox, Safari and Chrome.
After some process of elimination, it seems to occur when using the following X-UA-Compatible meta tag: <meta http-equiv="X-UA-Compatible" content="IE=EmulateIE8">. Eliminate this tag and problem solved! That’s it!