[Zope] ZODB size?

Hi, Running Zope 2, how big can the ZODB be before it'll take any serious security/performance/stability hit (if any)? I'm aware that absolute measurement depends on SW/HW config. I'm interested in limitations implicit in the software. (Perhaps not important, but platform is RedHat Linux 6.0. HW is PII-400, 256MB RAM, RAID storage.) -- Best regards / Mvh., Steen Suder Linux Systems Administrator Use "sfs @T sciatl DOD dk" for email or remove TOC from email address