Same thing is happening to me. Each day when I wake my PC (I rarely shutdow, just have it sleep) the Disk usage is maxed out by the F-Secure Host Process with a sub process called "F-Secure Ultralight Hoster". It seems to take anywhere from 10-15 minutes before I can even open a web browser. I set antivirus scans to happen at 3 am. Does F-Secure not wake my PC to perform, or is this some other kind of definitions update maybe? Doesn't seem to "Ultralight" if it consumes 100% of disk resources.
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