[Zope] Zope 1.10.2, Sessions and Z SQL Methods

Under Zope 1.10.2, Sessions and Z SQL Methods do not seem to play nicely. Querying through a Z SQL Method (using the ZPyGreSQLDA, at least) appears to modify the method somehow. This means that if somebody's working in a session while a user is browsing the site, bad things tend to happen. This makes Sessions nearly useless. Does anybody know how I can work around this problem? Cheers, Eric