Re: big problem

Two questions:
1. Are the images themselves included into the presentations and docs or do those documents only contain links to where-ever they were (another file on the internet or on your hard disk)? Usually, in MS Word at least, it's best (performancewise) to use 'Insert as link'.
2. What's your latest good backup? It makes a lot of sense to backup such a 3 years of work every month or so to CD/DVD or every week to iCloud or Dropbox (and to USB-stick every day).

Kees