Yeah restarting hildon-home fixed the system overloading but it's inconvenient to keep doing that all the time. I'm not using SD card swap either and i'm already set my default swapiness to 30. By default there will always be SWAP on eMMC, and I don't see how you are not using it? Enlightening me if I'm wrong but I'm sure that you're wrong. Unless you created another swap memory on SD Card.