Can't retrieve GPG key from Lyx fingerprint

[suez12 at free.fr]

Hello,

I can't retrieve the GPG public key as indicated from the "checksum and 
signing" section of the download page of lyx.org.

I've got a message saying  general error from key server.

I've also search on the internet for help or places to find this key 
without any success.

Does anybody has any cue on this error ?

Thanks for your help.

Emmanuel