Matt_Minton, I know of NO "gotchas" with Mint. I actually migrated from another linux distro (kde based) to Mint 4.0 and I assure you that you WILL NOT be disappointed with this distro! Welcome aboard!
Neither is there in any other: for there is no other name under heaven given among men, whereby we must be saved. Acts 4:12.
Dell Dimension 4600, 1g, Nvidia 5500, Mint 4.0, Mepis 7.0, XP
Acer Aspire 5002 WLMi, 1g, Sis 760, Mint 4.0