[Zope] Aiieee! 2365 exited with error code: 25

Hi, I was having this error message and found that it's caused by a 2Gb-storage-limit that zope has. I had to delete some data to reduce the size of my ZopeDB. Now it works. I have the following questions regarding this problem: 1) Does the current zope stable version (2.6.0) have the same problem? 2) Is there any patch to solve it in Zope 2.5.1 and later? 3) If the answer to the first question is "yes", what is the easiest alternative to store this data externally: LocalFS or relational databases? Are there other alternatives? Which one does zope.org use? Is it easy to convine this alternatives with the portal_catalog that it's included with CMF. Thanks in advanced and merry xmas to everybody, Josef.