[LEFT]When I first started using Linux (Ubuntu) I decided to just do a full install. The PC I installed it on, was full of viruses and to be honest, I was never good handling them. So, I decided to just go for it and install.
Anyways I got another computer recently, a much newer one and I decided to dual boot Windows Vista with Ubuntu 10.04. Well it didn't last long because I didn't favour the Windows side of the boot.
Well, do you guys dual boot with other operating systems? [/LEFT]
This seems like a more general question that should be posted in the lounge forum?
Are you asking because you are experiencing problems? I can tell you i have dual boot laptop and desktop at home with no issues running any setup so far.
laptop = Windows 7 ultimate/fedora (can't remember fedore release)
desktop = windows xp / RHEL6
I dual-boot Ubuntu Lucid Lynx and Snow Leopard on my Macbook pro 
I dual-boot Windows and Linux. When my old machine started getting a bit long in the tooth, I simply moved the old drive alongside the new one in my new PC, set it as default, and edited the bootloader a touch(new entries for Windows on the other drive, etc.) It booted flawlessly with no other modification.