Worth noting (at least as I understand it) that you don't need to delete uplay/SH5 - just go into your web browser (all of them if you use more than one), find 'addons' (IE) or 'Extensions' (Chrome) and disable the Uplay addon, if it's there.
AFAIK, if it's not there, and it isn't for me, then there should be no problem. :up:
EDIT: Clearer methods courtesy of RPS forums:
How to disable Uplay in Firefox:
Tools - Add-ons - Plugins - Disable the Uplay and Uplay PC Hub plugins
In Opera:
Settings - Preferences - Advanced - Downloads - Search "Uplay", delete
In Chrome:
Visit about
:plugins and disable
To check the vulnerability, visit this page
http://pastehtml.com/view/c6gxl1a79.html
If your browser is vulnerable, Uplay will start and the Windows Calculator will run.