Sounds trivial? Just go to Options\Under the hood and click on clear auto-opening settings, right?
Well... it's grayed out!
So I go to somewhere on the web and right-click on the link to an AVI file (the type of file in question) and save it. while it's being downloaded, I click on the attached drop-down menu and am surprised to see that "Always open files of this type" isn't marked at all. So I mark it and go back to the clear auto-opening settings - now it is not grayed out. So I click it and it is grayed out again.
Still links to AVIs open in chrome in playing mode and not save as mode...
btw, this mess happens only on my sisters computer. I've checked on mine - Chrome acts as you would have expected.
UPDATE:
I've checked it on IE, FF and Cr - the behavior is the same for all three browsers on her computer, whereas the behavior is "standard" on mine. So could it really be a plugin issue, or is it something in her Windows setting?