gpg-agent partitioning between sessions?

[Pete Ashdown]

I'm trying to "drop-in" gpg-agent for ssh-agent, and I was surprised to
find how gpg-agent behaves with multiple instances.  If I run a second
instance,and it asks me for an ssh-key password, it does not recognize the
password, but if I hit return, it gets auth (I presume) from the first
instance and connects on through.  Is there a way for it to not do this? 
I'd rather that the ssh-key password was prompted for each new session and
the gpg-agents did not communicate with each other.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: </pipermail/attachments/20121112/b586a25a/attachment.htm>