I had a brand new computer that i built at the start of the year. 100% new hardware. Brand new install of windows. Installed Steam, installed CS:GO. And I was unable to play because Steam flagged my system for cheating. The fix was to run some random steam exe found in the steam install directory. I guess it caused Steam to re-scan my system?
Not the same level of frustration as a permaban. But I was pretty annoyed that I had to jump through hoops on a brand-new system. Really weird.
Steam is terrible software. It's been losing track of my games lately, so every time I want to play something I have to wait around for 5 minutes or so for steam to rediscover the local game files it had already installed. Download management is terrible too, frequently coming to a crawl or stopping entirely. It's not my ISP throttling me, either, because this only happens with steam and not when I am downloading other massive things from other places.
Not the same level of frustration as a permaban. But I was pretty annoyed that I had to jump through hoops on a brand-new system. Really weird.