The address seems to be working. Can you test with your addons disabled, and let me know if it works then?

Works here as well.

• DVR Components Download: http://173.162.103.90/

Try to clear the Cache.

• Firefox/Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"

Boot the computer in Windows Safe Mode with network support (press F8 on the boot screen) to see if that works.

• http://www.bleepingcomputer.com/tutorials/how-to-start-windows-in-safe-mode/