Hi, ok I delete frst.exe and generated logs from A_Laptop. It is a miracle that all is ok here after 5 years. Great. B-Desktop: I am able to boot for a month with Comodo installed without problems. To be sure I would have to unistall CIS for *at least* one month (better two) to see if the hang happens even without CIS. Perhaps we could leave this misterious issue unresolved, after all - if this...