Mine are all lowercased "svchost". My desktop gets it every once in awhile but it's such a high performance machine that I never notice it slowing me down. My laptop is the one that gets pounded on because it's a slow computer. When that svchost kicks in at 100%, it kills everything. I should say it feels like it puts everything on hold since it takes forever to open anything up due to the intense process going into the svchost. The fan gets loud because the CPU is working on that for like 5 hours +. Weird. I disable it and everything goes back to normal until I trigger it again somehow.
*Fact: Microsoft Window's Blue Screen of Death vs Computerforums.org's White Screen of Death. Which is worse?