My main concern with upgrading is all the software that will probably stop working afterwards.
I'm wondering if anybody who has done this upgrade already would be kind enough to share their experience. I'm scared to find out afterwards about software that can't be reactivated after the new OS has been installed. I believe some companies charge you, or you have to buy a new license, if you need a new activation - possibly if you've failed to deactivate the software before making changes to the computer.
I'd be grateful for any tips, suggestions, warnings etc!