Posting to more than one group,

Hello, 

I had been responding to some of the mailing lists post, where I required
to cross post them. For a test case below is what I tried:

In the Newsgroup address: gmane.comp.gnome.apps.pan.devel,
gmane.comp.gnome.apps.pan.user

The error message: There were problems with this message "Warning unknown
group "gmane.comp.gnome.apps.pan.user" [GoBack] [PostAnyways]

In this case, I continued posting my message, finally I watched for the
success of the message. Within a minute those got posted across. 

Please let me know if this is a known issue, and if this is being
considered for future fixes. 

Cheers,
Kevin