Okay, so I seem to have eliminated the issue by removing the (unused and unconfigured) SIM card which I left sitting in the machine (for want of somewhere better to keep it).
The machine's been running flawlessly for a couple of days since. How peculiar.
Okay, so I seem to have eliminated the issue by removing the (unused and unconfigured) SIM card which I left sitting in the machine (for want of somewhere better to keep it).
The machine's been running flawlessly for a couple of days since. How peculiar.