[Zope] [SybDA+Solaris]Connection closed randomly

Hi folks ! I run Zope on several platforms. One of them give me a little problem: Sybase v12.0 +Zope2.3.0 + Sun E450 with Solaris 2.7 + SybaseDA v2.0b2 + Python1.5.2 (all recompile and freshly installed). When I run the same system on Linux : no problem. But with the Sun, the Sybase DA closed randomly and don't want to reopen the connection (or can't ?). I just have to restart the Zope Server to have the Sybase DA rerun correctly. 1-Has anybody run Sybase v12.0 + Zope correctly on Sun ? 2-Has anybody got the same problem previously ? 3-How can I log problems from Sybase DA (Is there a Python/Zope "stderr" that I can use ?) Any suggestion (other than" Run on Linux" because I know, but the System Administrator won't) ? Thanks. Tony