Originally Posted by
SLK001
squashfs is very CPU intensive (it is compressing your files). If your heatsink fins are clogged up, your system will overheat and it will shut down to protect itself.
Shine a light in the fan hole of your computer and look for visible light at the exhaust ports. If you can't see light, you aren't dissipating your heat - thus you are overheating.
When this happens to me, I use a shop vacuum and compressed air to clear the fins. Put the vacuum over the fan hole(s) and blow compressed air into the exhaust ports. Be thorough. Done properly, you should dislodge a considerable amount of dust, cat hair, dog hair, etc.