I use modal dialogs as an example of an app forcing the user to work in a modal way. Thunderbird used to throw up a modal dialog whenever I lost wifi on my lapt

I use modal dialogs as an example of an app forcing the user to work in a modal way. Thunderbird used to throw up a modal dialog whenever I lost wifi on my laptop. Outlook still won't let me send an email when I'm browsing the address book. Most people find modal behaviour an annoying restriction.