QUOTE (momo2 @ Oct 24 2008, 01:05 PM)

thanks for your input guys...appreciate it...
madmanchan...do you mean compressing with something like stuffit deluxe?...or does lightroom have that capability?...i haven't seen anything like that in lightroom but maybe i missed it...
thanks mmc
M
You can use Mac OS X buit-in compression utility. Just right-click (or Control + click) on your backup and choose Compress " name of your backup". A zip file will be created in the same folder.
To give you some hard numbers, my 2008 catalog backup is around 165MB. Using the system compression, my backup shrinks to 16.6MB, a 10x factor. Stuffit Deluxe should offer the same kind of compression.
I'm not aware of any compression capability built into Lightroom but Eric could confirm that.