Tech Alert From TreeHugger

We have recently heard from a few readers of TreeHugger that they experienced an aggressive popup ad while visiting the site. We have not found the source of the popup on our servers, and are now working with the various third party ad services that partner with TreeHugger to try and isolate the issue.

In the meantime, if you have been affected by these ads, and are concerned about malware resulting from them, please use the following instructions to remove any malware from your computer:

How to Remove DriveCleaner (Security Response from Symantec)
How to Remove SystemDoctor (Security Response from Symantec)
Wikipedia entry on this family of malware (including section on removal)