Ok, I wasn't sure where the best place to put this would be, so it's going here. This is my second attempt with Manjaro with Plasma in the past week. I talked about this in another thread, but at the time I thought it was an issue with Falkon, because that's where it started.
What happens is: I install a bunch of stuff. Falkon, after awhile, starts randomly hanging up. You'll have freezes for five or six seconds at a time. Then other stuff starts to slow down. Then the entire display starts randomly going dark for a second or two. That's the stage I'm at right now. The last time, it eventually got to the point at which plasma just crashed and I had to reinstall. It takes about two days from the time I install the system for this to happen. I haven't had this much trouble with a desktop since I installed KDE 4.0 back in 2008. What's going on?