Could you email us a large sample, approximately 100mb uncompressed, of your data through to support@logscape.com and we'll take a look into this issue.
Apologies I wrote back via email, the update helped a lot, I can search at the speed of about 15 Million records per minute, it is not blazing fast but it just keep going, I have about a 1 billion records on a single node, it does not crash.
My disks are also not very fast.
There are still few little inconsistency like the hits on the list of the sources and the real hits but it is acceptable.
Looking at having a distributed environment and at buy some commercial support when we complete the test phase