Well, dammit...I spoke too soon. I've run hard into the wi-fi connectivity issues that have plagued a lot of people with Yosemite upgrades, if reading around is any measure. I've always had Airport problems, even when my computer was brand new 5ish years ago. For years I wired directly to the modem, but now that's 2 rooms away (our downstairs is one big room, so no walls between computer and router and I have no issues with my phone connecting to our wi-fi from anywhere in the house). Now things are positively horrid. I can forget streaming Spotify or watching any streaming video. Pages can take a minute or more to load, my connection randomly drops completely. Ugh!!! There are no less than 10 possible solutions being presented, but I have no idea where to even start. I may just go the PRAM route. Or toss my damned machine out the window next to me!