Add/Remove Programs not auto-updated?
I noticed, at least under Win98, that when you uninstall a program that uses NSIS (or NSIS itself) through the Add/Remove Programs tab, it doesn't remove that entry from the dialog until you close and re-open it. Most other software automatically disappears from this list when you uninstall it so I think NSIS programs should do it too. Otherwise, people may think that the program hasn't been uninstalled properly. Then, if they try to click it again, they get a message that an error occurred and if they would like to remove the item from the tab. I think many people will run into this problem.