We have been using IE 9 now for a month or so, and it works really well, but it has a few little differences and as we all know, some differences can be annoying or aggravating. IE 9 is not available for XP, only Vista and Windows 7.
IE9 is supposed to be more secure and have better security built in and it does, but it comes with a few differences in the way the browser works.
The biggest difference for me, is when downloading a file. They have radically changed how the download confirmation button looks and where it is located. For years, we would see a pop up window in the middle saying "DO you want to download this file?" and Yes or NO buttons were right there. Then they moved it to the top of the window in a long yellow box asking if you wanted to download the file.
Now you have to look at the bottom of the window, and there is a long strip across the bottom that asked
Normally you will click on the save button. But if you just click on SAVE, it will save it to the last location you saved a file to, and when done, it will ask if you want to run or go to the location where the download file is. You also have the choice to SAVE AS (rename it and put it where you want) and to Save it and then Run the file. This is much more Firefox or Chrome like in the way you download. There is nothing wrong with it, I am just having a hard time getting used to that, and I download a lot of files.
The other key difference is a security feature, but a bit of a pain if you are not used to it. IE9 will pop up on the bottom of the screen after first installing it, or after you install a tool bar or other "add on" to your browser. It asks, do you want to enable this add on? And you can decide whether or not you want it to load.
Why does it do this? So when you accidently, unknowingly download a stupid toolbar for Google or whatever, and then it installs it, IE is asking if you want to run it. If you don't have a clue, just say no or disable it. It will ask a few times, if you do nothing, it will finally stop asking you, after 5 times.
Another tip is the word menu across the top. It is not there when you start up IE9. So if you put your mouse in the top bar of the window, right click and a menu comes up, and if you click on "Menu Bar" you will get the old "File, Edit, View..." Text buttons across the top.
I like the clean look, not a lot of junk to clutter up the screen, and also it seems very fast.