Ah sigh... Isn't this the way it always is? I upgrade to OSX Leopard on my 2005 Powerbook G4 and wouldn't you know there's a lag when I type. All I do is type! All day long: type, type, type. It's true: 90% of the time I use my computer as a fancy typewriter.
I noticed the problem first on
Scrivener, one of my favorite word processing programs (see previous
post here), and because Scrivener's forum was down, I ended up emailing Keith, Scrivener's creator (and genius). Here's what he said:
"What machine are you using? My guess is that you are using a G4 PPC machine... Unfortunately it turns out that Leopard has changed the way text is rendered in the OS X text system (which Scrivener uses) so that all of the text gets re-laid out every time you type, which causes big problems for older hardware. Basically, they've optimised it for Intel machines at the expense of PPC machines. Some users have reported that downloading the 10.5.2 update followed by the graphics update (both should appear in your software update list - the graphics update won't appear until after you have updated to 10.5.2, though) have sped things back up, but my own tests suggest this is only minimal. I have it on my list to see if there is anything I can do about this, but it has affected a lot of programs, including Nisus Writer. I spoke to one of the programmers of Nisus, and the sort of things they have had to do to try to speed things back up sound horrible - lots of ugly hacks."
So I went and downloaded the patch. It IS a little better, but I'm still noticing the issue, and not just with Scrivener, but with every application that uses text -- iweb, iphoto, MSWord, etc. When I told Keith he was right, that the graphics patch didn't fix it completely, he wrote: " I guess Apple wants everyone to go out and buy a MacBook."
Yup. I think that sums it up. I bought my machine in the summer of 2005, right before the Macbooks came out. My beautiful little laptop is only 3 years old, and I bought extra memory and everything thinking it would give it more longevity. Ah, nope.
Here's the upshot: I love Apple, but I hate it that every time they do big system updates, my "old" machine works a little worse.
On the other hand, it was pretty cool getting an email from Keith at Scrivener. What a nice guy! Go Scrivener Go!