GPG error: ! ppa Ubuntu 11.04

I followed the instructions as per:

and Instead, I get:
W: GPG error: natty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B5115B98AA836CA8

btw: I did the exact same as above in "Kubuntu 11.04" and everything went fine.

ok, well I found this and it worked thx.
and actually the above gpg error is from "UbuntuStudio 11.04"

wget -q "" -O- | sudo apt-key add -

To Moderators of this Forum:

btw, can we now stop with all this double and triple cryptic looking word notifications everytime i want to simply post a topic/reply/.../.whatever ?!

It should be more than enough that ppl are bugged about 1 word notification at login to this forum.
It almost as if you don't want ppl posting to your forum


To kdenlive:
This should have its own topic, but kudos to all the ppl workin' on "kdenlive"
It is, bar none, the best NL Video Editor in Linux. ! And I still believe Sony's "Vegas" was stolen from kdenlive

I'm torn between "Kubuntu", "UbuntuStudio", and Arch, as distros of choice for kdenlive, but that's about my only quirk. I've heard good things about opensuse, but I like my debian, and BSD/Unix styles too much still.
Unfortunately "Unity" in Ubuntu sucks. :(
Now, if they ever came out with a "KubuntuStudio", AND an "ArchStudio" just for kdelive, then wow, -just for me ?

anyway, thx, and keep up the great work.