ClamTk update message

The ClamTk update message is for the GUI. You can check what version you have now, by clicking on the "yellow star" icon. Go to the home page, then download the update and install version 5.26, and any appropriate add-on files, then close and re-open ClamTk to confirm that the update message is gone.

For virus signature updates, first click the "Scheduler" icon and confirm that you have updates configured. Then click the "Update" icon to manually update the virus signatures.

The red circle icon is a different problem. Usually it's broken packages. Start Synaptic and go to the Edit menu, and select "Fix broken packages". Repeat this until it doesn't complain any more. Reboot the computer and the red circle icon should be gone. If it isn't, more work needs to be done on your system.

ClamTK by default does not call for an update to signatures automatically. You can click on the Update section to do it manually, or you can set up a schedule to update daily at a set time. You can also set it to scan in the background at a set time. If you're concerned about unmet dependencies for ClamTK, just remove it and reinstall.