Originally Posted by dor
I don't like the pricy-ness of macs and the other thing that POs me is that you can run note.pad or a .txt document from a windows 95 computer on your windows xp dual core processor...while mac has undergone three major software/hardware shifts that rendors all your old apps and files obselete. I just got an IMAc two years ago its obsolete machinary - since steve jobs switched to an intel processor (i also wonder if this will make macs more vurnerable)
Although Macs have gone through significant software and hardware shifts, it shouldn't affect file formats too much unless you're using something proprietary - .docs, .txts, .rtfs, .jpgs and all other file formats should open fine regardless of your OS version.
All of the new apps that have been released since the switch to Intel have been 'Universal Binaries', which means they have all the coding necessary to run either under a PowerPC processor or on an Intel.
Likewise, your 2 year old iMac isn't obsolete, it's just not top of the line - every modern program should run just as well on a PowerPC as an Intel Mac, with the exception of some of the more hack-y things that go into the system (like CoreDuoTemp, which gives the temperature of the Mac's chips).
As for security, the security isn't dependent on the chip type but rather how the OS handles itself - there have been UNIX boxes with decent security running on Intel platforms for years. And Apple have, according to Steve Jobs at a keynote when he announced Intel, had Intel versions of the Operating Systems ever since OS 10.1.
Are there any specific problems you're having with your mac? If so, let me know and I might be able to help.