[Kubuntu11.10_64Bit]-Wine1.4rc4_PPA-"public key is not available"?

[Jesse Palser]

[Kubuntu11.10_64Bit]-Wine1.4rc4_PPA-"public key is not available"?

Hi,

Running current Wine version 1.4 RC #4
on Kubuntu 11.10 64Bit OS (fully updated).

I added the Wine 1.4 PPA to my "Software Sources",
but now "Update Manager" constantly complains:
"The following signatures couldn't be verified because the public key is 
not available" ?
(Wine 1.4 RC #4 works fine)

How do I fix the above error?

Thanks!

Jesse