As I explained to Silver, I'm not in a position to do too much of anything on the site this week. I'll certainly be digging deeper into those stats at the weekend though. To put it into context, these two bots appear to have been responsible for something like 500K hits. This is a significant chunk of the 1400K hits the stats show as the total for this month.

This is clearly unacceptable, so I'm going to be doing something about it

As a side issue, the caching changes I made the other day to try and improve things have had to be taken off-line. They were causing major problems with the log in/log out process and effectively meant it was practically impossible to log off.