Since I haven't been able to find a complete list of harddisks and the ability to lock them I think it's a good idea to compile a list so that if someone wants to buy a new hd he/she knows what will / won't lock and won't lose money by buying a hd and find out by trying.
Please reply to this message with the Brand, ModelNumber, Size, RPM, Buffersize and Lockability of your harddisk.
My hd is
Maxtor, 4D080H4. 80Gb, 5400, 2Mb, not lockable (tried with ConfigMagic)