Quote from EliteInterest:
Isn't the fact that Gentoo is source based part of why it is desirable? As for a broken installation, I have learned the hard way that making an image of a happy Gentoo installation is extrêmement recommandé, particularly before updating. Nononsense might wish to elaborate here, but the basic info is to use Partimage (free) or Acronis. External Firewire drives are on the cheap - just place the image there for safe-keeping.
You're absolutely right Elite!
Of course, you have to make sure, when making an image of your root partition, that you are not running from the same OS. Boot a different linux, easiest from a livecd. Partimage is on the Knoppix livecd. (I also believe that gentoo now put it on its 2005.0 livecd). One more detail: with partimage, make sure you chose the right extension when entering a filename for your compressed image.
Works like a charm. Takes only 10-20 minutes for the job.
I do this systematically before every upgrade, however trivial.
Don't make yourself believe other distro's are less subject to mishaps. (Let's not even mention M$

). With proper precaution, I don't find debian any more reliable than gentoo. In fact you are always far behind and up to date hardware requires lots of tinkering if you want to have everything going. You get perhaps more stability with debian if you are prepared to run on a linux of 2 years back. apt is Ok but no match for portage. Of course, debian is also great. If you hesitate, you should get experience with both and then decide.
One final note. The truth with backups is that if you follow the discipline rigorously, chances are you'll never need them!

I run 4 linux systems at my place and haven't done a restore for about a year now - only as an exercise! Don't forget to exercise though. It's like the firebrigade drills.
About Ubuntu. Doesn't look bad if it runs. I tried the livecd on all 4 my machines. It ran on 2, on the other 2 it didn't. Knoppix livecd ran on all 4! So I'll try again with a future version. Not ready for me yet!
Be good,
nononsense