Max disk size for S1

Hi, a brief question,

I want to change my original 120Gb HD in my S1 Express Dual notebook.
I'm thinking into install a WD Scorpio black SATA 7200 500Gb but I have read some threads in this forum and I'm a bit confused...

Somebody could tell me if the maximum capacity of a hard disk with last BIOS revision RKYWSF33 is limited or is under reasonable limits?
Or easier, somebody have tried to install a 500gb hdd or a 320gb hdd and have checked that works?

Thanks & regards

Toni