WARN Could not create an instance of the counter …
Sitecore log files bigger than they should be? Are you finding "Could not create an instance of the counter" ... numerous times? Well this seems to be a common problem especially if you have manually installed Sitecore. The problem is that the counters are not installed. Sitecore has realized this and created a script to install the necessary performance counters.
This is the second time I have encountered the following error and figured I should post it on my own site for reference.
Reposted from: http://mtv-on-dotnet-dev.blogspot.com/2010/01/sitecore-log-warn-counter-category.html
The warning:
3828 12:10:43 WARN Could not create an instance of the counter 'Reflection.ObjectsCreated' (category: 'Sitecore.System')
'Reflection.ObjectsCreated' is the example I chose from my log, however, the actual counter may differ.
The fix: