F12 installs report here.

[Gordon Messmer]

Dell Inspiron 531S:
     Installed 64-bit, everything I've tested works perfectly.

Dell Latitude E6400:
     Installed 64-bit, everything I've tested works perfectly.

Dell Inspiron 546:
     +Airlink 101 wireless PCI card
     Installed 64-bit, everything I've tested works perfectly.
     (Side note: it took me several hours to get the wireless card 
working in Windows 7)

Toshiba (forgot the model number):
     I attempted an update of a friend's laptop Friday night and learned 
that the system crashes unless I use "nomodeset" as a kernel option.  
The Intel i915 driver is the offending code.  I gathered some 
information and filed a bugzilla report, but haven't updated the laptop 
yet.  I did boot the LiveCD with "nomodeset" and everything else seemed 
fine.