After a few hours unattended, powered by a spare microUSB phone charger, my pi loses connectivity and stops running scripts, which don't depend on internet connectivity.
An example of a process/script that will stop running is a crontab call every 5 minutes to a script in /usr/local/bin that checks on an init.d process. Whenever my connectivity cuts out, so does everything it seems. In fact, the logs I've tried to throw together only report good outcomes, i.e. 'process x is running.' Whenever stuff cuts out, there is just nothing logged.
What might be happening?
I'd note I had everything working on a smaller sd card by the same manufacturer, and decided to move everything to a larger sd card.
I am connected to WiFi by on of the Edimax dongles.