I noticed some WCG MCM invalids on a new system I built. I stumbled upon a forum post (WCG forums) indicating it may be the fault of Ubuntu 19.10/Kernel 5.3.

Preliminary results indicate there…

Ubuntu 19.10/Kernel 5.3 World Community Grid MCM Invalids

Source: [H]ardOCP – Ubuntu 19.10/Kernel 5.3 World Community Grid MCM Invalids