[Zope] data file keeps growing

[Declan Shanaghy]

I have the /Members folder of a CMF site mounted in
its own separate ZODB called MemberData.fs.

The file keeps growing at an alarming rate of about
400MB a day until it eventually reaches the 2GB limit
them i get loads of MemberData.fs.trxxxx files

There's no extra data explicitly being put into the
member homes, if i go to pack database it reduces back
to about 50MB

Does anyone have the slightest clue what could be
going on?!?!?!?!?