Those who know me, know I work at a tech support for Manulife Financial.

One of the people I work with likes to talk (and give advice) alot about computers and windows and such, but most of it is usually wrong.

Should I:
-just keep quiet and not correct him, or
-keep quiet and then inform those he spoke with about proper information, or
-butt in and explain the correct info (that I am sure of, not just pretty sure, so not to look like a fool)

I'm sure some here have run into this and was wondering what you've done?

Personally, I feel pretty stupid when I inform someone something, then get outed when I'm wrong. However, I am happy that I didn't just inform someone (without knowing) to corrupt their PC, or open their vulnerability, or such....