Question :

I am (still) using an iBook G4 and I very content with it most of the things I use it for. (Even in this day & age of OSX 10.8 “Mountain Lion” and Intel-Macs, I’m still happily using MacOSX 10.5.8 “Leopard” on a PowerPC-Mac…)

And even though Safari 5.0.6 is still doing great for me for regular web browsing, it chokes on YouTube…

How can I fix this ?

Answer :

The iBook G4’s graphics card performance is rather ‘underpowered’ compared to current Macs…

Just install MacTubes, it’s a FREE dedicated application that will run current YouTube-video’s far more smooth than YouTube.com in Safari :

http://www.macupdate.com/app/mac/28608/mactubes