[_yy]

Debian is more conservative with changes - if you want your systems to be rock-solid, go with Debian. The downside is that it's so stable that packages are usually outdated, but in many cases there are more recent backports which you can cherry-pick.

In my experience, Debian's security team responds to new CVEs faster than Ubuntu's, but this is purely subjective.

[kristopolous]

Also the users are a bit more, um accurate, in their answers; so if you run into problems, you may be in better hands if you reach out ( so long as people in help places aren't being hostile twats ).

[jokr004]

Absolutely, I've found the debian community to be one of the best out there as far as support goes.

[ris]

I've found them to be a highly mixed bag in IRC.