The latest OSX update (Mavericks[1]) was free, and I've been running an OS that's three years behind, and I have a vague recollection that there was software that was only available for more recent versions of OSX. So I went ahead and updated.
[1] "To install OSX Mavericks, say 'Siri, I feel the need for speed.'"
Good things: the update went smoothly. Nominally better battery life. I can finally disable Spellcheck on a system-wide level. I guess iBooks on the laptop is a good thing.
Not so much irritating as mildly baffling: whenever I close an app, rather than popping up whatever app was next in the task-switcher, as you'd expect, Finder opens. I got nothing. Seems to have fixed itself, probably when I updated the keyboard hack.
Decidedly non-minor: trackpad scrolling is less responsive than it used to be and my hacked Delete key (formerly the worthless Eject key) doesn't work about half the time. [Fixed that one by updating the hack.] Also Firefox will frequently decide to stop loading web pages altogether, necessitating a close-and-restart.
Verdict: eh, shouldn't have upgraded. Oh well. Since I've already decided against a new laptop in the next year or two, I guess I should go ahead and buy more RAM.
[1] "To install OSX Mavericks, say 'Siri, I feel the need for speed.'"
Good things: the update went smoothly. Nominally better battery life. I can finally disable Spellcheck on a system-wide level. I guess iBooks on the laptop is a good thing.
Decidedly non-minor: trackpad scrolling is less responsive than it used to be
Verdict: eh, shouldn't have upgraded. Oh well. Since I've already decided against a new laptop in the next year or two, I guess I should go ahead and buy more RAM.