If you want the fastest development time solution, then continue with the RAM disk solution.
If you want a more robust and scalable solution, then I agree with the others that suggest that you start migrating to a DB centric solution.
I use to work for a major vendor of web log processing software, and our solution was definitely a DB backend.

Here is a short list of potential bottlenecks when using DB’s to import web logs, just as a FYI.

Import speed
Import munging (filtering out invalid web log entries etc.)
DB table size growth
Managing DB access from a Data Warehouse (DW) if you keep your logs for an extended period

The up sides to a DB centric solution for web log processing are:

Scalability
Accessibility (Many different methods to read the data)
Flexibility (Integrate web log DB with other DB’s like sales, surveys, email campaigns)
Analysis and Data Mining (Lots of COTS {Commercial off the Shelf} software available)

Richard

There are three types of people in this world, those that can count and those that cannot. Anon