I've got OS 10.4.11, Jack, and when I tried recently to update to the latest Firefox and iTunes, got messages that I can't do so without upgrading my operating system.

Didn't notice that with iTunes - with Firefox, am I actually missing anything by not using Firefox 4? I haven't yet found a site I want to use where FF 3.6 isn't adequate.

the technology and power of applications has grown faster than I have immediate need or desire to learn or use. I find myself often dismayed or baffled now as what I need or want becomes obsolete in service to changing demands that I myself have no use for and do not have the leisure time to learn, "just for the sake of it."

Me too to that.