Files detected as JS/forcepopup@troj are attempting to install software that generates popup windows. The software is capable of bypassing popup blockers such as Internet Explorer popup blocker, Norton Internet Security popup blocker, and Google Toolbar. Furthermore, it has a tracking cookie that can be used to track the affected user's browsing habits.
Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.
Detailed instructions for F-Secure security products are available in the documentation found in the Downloads section of our Home - Global site.
You may also refer to the Knowledge Base on the F-Secure Community site for further assistance.