Well, except for the fact that my MacBook Air and MacBook Pro crash (Kernel Fault, hard freeze, requires power cycle) on numerous USB devices - both FTDI VCP serial drivers, as well as whatever is driving the Keyspan Triplite Console box.

This has been true on pretty much every release of OS X Lion 10.7. Every two-three months I drop in a new driver from the FTDI site, and upgrade to a new patch of Lion - but both devices continue to sporadically black-screen me.

Every time I pull out a USB cable/Plug it it it's like I'm rolling dice.

The FTDI drivers on Windows XP are pretty mature (I've never had a crash on that platform), and I think they're built into recent releases of the Linux kernel - and I've heard no complaints there (or experienced them myself)- so, perhaps this is actually proving your point somewhat.

We still have a ways to go before we experience 5 9s reliability on USB Hot Plug though...