Inconsistent booting

[manekineko]

Has anyone else seen this behavior? Anyone able to explain what causes it?

When I boot up it seems like there are 3 different possibilities:
1. Works fine, everyone is pleased
2. Boots up, but is extremely slow. Slowness is usually (but not always) permanent until next reboot. Will sit right after boot on partially rendered lock screen and be extremely unresponsive. Initial connection to network takes forever. Generally when you finally do manage to unlock, widgets take forever to load, and there is usually a message up about how the system isn't responding. Clicking the App button to bring up the app list will take 2 seconds or more to respond sometimes. Interestingly, running Neocore yields a benchmark half of what I usually get, at 9.5fps.
3. Boot dies almost immediately after launching haret, on the line "allocated dma buffer at ffc0b000, dma_addr 25260000". Words stop scrolling, though the cursor is still flashing, and a reset is necessary.

It strikes me as really weird that the boot can result in different outcomes. I would have thought it's pretty much deterministic, being a computer and all.

I haven't always had the 3rd outcome in there, but the first two have been with me pretty much since I started using XDAndroid I think, and I've restarted from a clean data.img with a reformatted SD card many times.

Edit: Also, just to clarify, I'm running with no overclock.