[Zope] Zope crashing a RedHat installation?

[Aaron Bauman]

Hi,
We're running Zope 2.7.3, Plone 1.0.something 
relatively large Data.fs ( > 300MB )
Decent amount of anonymous traffic, 
But relatively low administrative use (1 - 2 users usually).

Could these factors be brining the machine down?
I've been getting intermittent 'corrupted data' messages for some time, but
only recently been experiencing serious downtime.
Is it time to seriously look at cleaning up the ZODB and upgrading?
Or is my web host just trying to sell me more hardware?

Any help much appreciated,
-
Aaron Bauman
http://www.gaycenter.org