duty cycles on compact flash?

["Steven M. Bellovin" <smb%cs.columbia.edu@localhost>]

How many times can a typical CF card be written?

I'm going to build a gateway from a Soekris 4801.  I may want to use it 
as a DHCP server, in which case I'd like to use non-volatile storage 
for the lease database.  How long could I expect it to last?

                --Steven M. Bellovin, http://www.cs.columbia.edu/~smb