Upgrading from Ubuntu 10.04 to 12.04?

Question

I am thinking of upgrading from 10.04 to 12.04, just a click away in the software centre (no particular reason other than to benefit from recent fixes and continued support).

There are probably no easy answers (though I'd like some brief ones), but I wonder how common soft/hardware in/compatibility related problems are, resulting from such an upgrade?

Also, I am assuming all custom configurations will remain unchanged after such an upgrade (default email and custom settings, www browser bookmarks, various .rc files, repository settings for auto upgrades of unsupported software, and such), please correct me if should not assume so.

Answer 1

I've never really had one or seen one in real life, but there are plenty of posts and threads from people who have. My impression is that if you are at all a 'normal' sort of user on fairly normal hardware you'll be fine, though it's probably worth making sure you've a backup first anyway. Commonish causes of problems seem to be internal modems, non-free graphics drivers and especially old hardware.