Well, it's odd, but I never really have any technical problems like the ones you list here. I believe that's mainly because I am a computer technician and I keep up with Windows updates, Antivirus and all that stuff. I recommend if you have tight space on your hardrive to run Cleanup Disks and Defragments on your computers. I used to play on my computer, which is temporarily down because somehow the MoBo (Motherboard) stopped working, so now I play on my laptop and it's always laggy. My computer is top of the line, I built it myself, so it's really fast and I never got any lag. But the laptop isn't as fast, and every turn is laggy. That might be some of the loading problem you mentioned jerkface, when that happens, do you let it sit or just make the game crash?
Apocripha, what IS the problem? You never listed it. You just said you were having major issues with the PC version of FFXI, but you never said what that issue is, maybe you can avoid going to PS2.
In the case you wanted to go PS2, I have installed FFXI way more times than I've wanted to, and every time I've seen an option that allows you to use an account on the machine instead of making a new account. I don't know if it's going to work like that for PS2 but I guess it should, that would allow you to use your PC account on PS2 and you wouldn't have to pay for another account, just for the PS2 game.
I do think that PC game is better, I know that PS2 controller simplifies a lot of things, but I'm so used to the keyboard that learnign anything else would throw my balance off, and I really don't feel like dropping a couple of buckarooes to buy a USB Keyboard for my dusty PS2 and then have to put the controller down every time I have to type something >_<. I'm waiting one more week for the stupid MOBO and going back to using my PC ^^.
Good luck with the PS2 if you make the jump downwards, and if you have any more technical questions computer wise, you can send me an e-mail at Ctabares@here-i.com.