I've installed two maintenance releases with the hopes that this has fixed some of the quirks associated with the "latest and greatest" version of vBulletin.
Let me know if there are any problems that need to be addressed.
I've never had issues with Windows or Linux. The server is a Linux server. I like to stay away from Apple, although I think their newer products offer alot of really cool user interface features.
The PC works every day and gets along with everyone (software), but one day PC gets angry and decides to shoot up the office (blue screen of death).
The Mac is an unemployed student, and so long as you feed it (OS updates), it will continue to work for you. Due to it's lack of experience (read: market share), it generally doesn't get along with everyone.
The Linux is a retired software engineer whom doesn't give a shit (open source) that works everyday on his Bonsai garden (server) and get's along with anyone that brings pot (freeware).