Mac users - have you downloaded OS X Yosemite? How's it working for you?

[OakLeaf]

I just got a new MB Air with Yosemite pre-installed.

Whatever you do, do NOT turn on encryption (FileVault). There is a bug that causes encryption to hang, leaving half the hard drive encrypted and impossible to turn off or even erase.

After all was said and done, I wound up having to re-install the OS TWICE, including downloading a fresh copy once. I've got decent internet here and it "only" took about four hours. If I'd had to do it in the sticks though, I would've had to drive it up to the Apple Store and swipe their bandwidth. In the country, we have Windstream which the FCC has documented as being the slowest least reliable internet company in the USA. We can't even watch video clips or stream music. Probably going to switch to Exede next spring ... but that's another thread ... (but Kirsten, you might look into Exede also if your options are limited - the only trouble with satellite service is latency on the uplink can be long, pretty much rules out most realtime gaming, but if your internet is slow anyway you're not losing anything, and at least you'd get GREAT downlink bandwidth).

But anyway ... it hasn't even been 24 hours since the reinstall, but all seems good so far. Prior to the crash it was not doing anything weird like you describe. Sounds like you've got some system extension conflicts. That's one thing that Apple Support is usually good at helping troubleshoot. (Unlike mine, which was just annoying until Apple Support gave me instructions on how to brick it and DH had to bring it back to life because all they wanted was for me to shelve it for two weeks until there was an appointment available at the Apple Store!)

Were you coming from Mavericks, or from an earlier OS? I skipped right over a whole bunch, my old computer still has Snow Leopard (and once I get everything squared away with the new one, I'm thinking I might update the old box to Yosemite). Anyway, DH took two of his computers from, I think Lion, or maybe Mountain Lion, to Mavericks, with no trouble at all, and with a noticeable performance improvement even on older hardware (though he did also replace the HD in one of them with a SSD, which obviously gives a HUGE performance improvement).