Timeout for a spinning ZPsycopgDA

Hi there

this weekend I had a problem with a spinning Zope caused by hanging 
postgres (too many connections) database.

This is my setup:
   - Zope Server (Zope 2.10.5)
   - Python 2.4.4
   - psycopg 2.0.5.1
   - remote database server with PostgreSQL 8.2.6 installed

The problem was: On the remote remote database server there were too 
many connections open (> 300).
The ps -ax command told me there were > 300 entries of:
   postgres: postgres intranetdb <IP_ADDRESS>(36635) idle

I could ping the remote database server but connecting to any postgres 
database failed.

I could not login in the Zope Root Folder where my ZPsycopgDA objects 
live. These ZPsycopgDA objects connect to the remote server and I guess 
the Zope was hanging because the ZPsycopgDA objects could not connect to 
the hanging database server. This also made the whole Zope site hanging.

My question is: Can I set any timeout in the ZPsycopgDA so the Zope site 
won't hang for hours?

Thanks in advance
Nico