I'm experiencing these as well. Once today it came up asking me to force close "Messaging," which was weird because I'd only just started my phone and it was going through the usual process of mounting the SD card when it happened. When I get this issue, it will virbrate one pulse, then a second time with two pulses, followed by the messaging asking to force close.
I'm using my phone rooted with the stock debloated rom and a kernel I found in the rooting beginner guide. This was after I tried using a different rom (same kernel) but installing system data from the previous. It had a constant message asking to "force close" with something more substantial, like a modem, I erased my data and started over, not installing previous system data. It has been much more stable this time, although, like I said, today I had this issue. I haven't seen it at any other point today, so I'm content for now.