application.log, search engines and url variables...

I am having some instability issues with my coldFusion server. What I think is happening is that search enginge bots are going through pages that require a variable for example but being it doesn't have it, it creates an error that say ID isn't defined for example. This fills up

application.log, search engines, and variables

I am having some instability issues with my coldFusion server. What I think is happening is that search enginge bots are going through pages that require a variable for example but being it doesn't have it, it creates an error that say ID isn't defined for example. This fills up application.log