A new UPX packed variant of MyDoom worm - Mydoom.O, also detected as Mydoom.Q has been found on August 3rd, 2004. For more details, please see Mydoom.Q.
Depending on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the suspect file, or ask you for a desired action.
More scanning & removal options
More information on the scanning and removal options available in your F-Secure product can be found in the Help Center.
You may also refer to the Knowledge Base on the F-Secure Community site for more information.