Latest Internet Explorer 9 Release
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running this on my main desktop now, lower resource usage than IE8 and the fish tank test gets full 60fps even on 1000 fish. Some sites seem to stick on "waiting for" a while tho when loading.
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McAfee. Preinstalled with the OS...
Should I remove it? I can get a different Antivirus...
This post is NOT for the purpose of trying to start an argument as to which security product is "the best". It's for informational purposes only to help the OP resolve a situation.
There are several free products available that can be substituted for McAfee for the sole purpose of seeing if your situation is related to an antivirus/antimalware filter driver issue. If you decide to try a different product, use the McAfee Consumer Product Removal Tool (MCPR.exe) to make sure all remnants of McAfee are removed from your computer.
EDIT: Additional thought. Go to the official IE9 download site and save the appropriate version to your desktop. Disconnect your machine from the internet, turn off McAfee, and see if IE9 will install.
How to uninstall or reinstall supported McAfee consumer products using the McAfee Consumer Products Removal tool (MCPR.exe)
Among the free and often recommended security tools are Microsoft Security Essentials, Avast, Avira, and Comodo to name just a few. Once McAfee is uninstalled feel free to pick another product and see if it makes a difference in being able to install IE9.
Not only I can install IE9, Secunia PSI and other executables now work! Thank you! 
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![]()
McAfee. Preinstalled with the OS...
Should I remove it? I can get a different Antivirus...
This post is NOT for the purpose of trying to start an argument as to which security product is "the best". It's for informational purposes only to help the OP resolve a situation.
There are several free products available that can be substituted for McAfee for the sole purpose of seeing if your situation is related to an antivirus/antimalware filter driver issue. If you decide to try a different product, use the McAfee Consumer Product Removal Tool (MCPR.exe) to make sure all remnants of McAfee are removed from your computer.
EDIT: Additional thought. Go to the official IE9 download site and save the appropriate version to your desktop. Disconnect your machine from the internet, turn off McAfee, and see if IE9 will install.
How to uninstall or reinstall supported McAfee consumer products using the McAfee Consumer Products Removal tool (MCPR.exe)
Among the free and often recommended security tools are Microsoft Security Essentials, Avast, Avira, and Comodo to name just a few. Once McAfee is uninstalled feel free to pick another product and see if it makes a difference in being able to install IE9.
Not only I can install IE9, Secunia PSI and other executables now work! Thank you!
I'm glad to hear things worked out for you! 
Thanks for posting back and letting us know.
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