tasker.exe is probably malware or viruses. It's possible that your computer's security is being compromised by this program. You should scan your PC right away to avoid any further damage.

tasker has been linked to the malware Mydoom.R Trojan, and should be cleaned immediately. Before making any changes to your computer, you should backup your files, or create a Windows system restore point, so you don't lose any important data.

A good way to ensure that you only remove harmful files is to use Computer Associates's free scan of your computer.

Since tasker.exe is running on your computer, there is a good chance that more harmful file is lurking. The best way to avoid problems with malware and other types of malware is to scan your computer for free and get rid of all the harmful files right now.