Latest questions about "safe mode"

I wonder whether Safe Mode for Firefox really works. By the way, how can I switch it on?

If my phone is locked from too many pattern attempts, but is in Safe Mode, how do I unlock it?

When I try to open Word, I am disconnected, I receive a message with regrets and then I am asked if I want to open Word in safe mode.

I want to download and install Ez Internet Timer in my Windows XP PC. Will it work? Do you have any another alternative with the same features?