Unfortunately this is the way with modern operating systems - lots and lots of bug fixes and updates. You could go through them one-by-one and decide what you think is important but it might be a good idea to try and order an updates CD from somewhere on the net. Eg if you live in Australia elx.com.au has 'errata' CDs for Mandrake:
http://www.elx.com.au/item/mdk101errata
Otherwise just set the thing to download overnight.