Yesterday morning, whenever I received a text message it would silently sneak into the inbox without my phone (nokia 6630) playing the 'text message arriving' alert. This afternoon it wouldn't even receive any. I checked the phone settings but they looked ok. I hadn't changed any recently so I couldn't see what the problem was. I could still send messages and send and receive phone calls.

This morning I put the sim card in my old phone and 8 new text messages arrived. A lot of them were 'test' messages I sent myself yesterday but some were actual messages which I should have had.

Tonight I put the sim back the phone with the intention of backing up my data and resetting the phone. The battery had been out of the phone all day and when I switched it back on it asked me for the time, date and my timezone. I sent myself another 'test' text message and to my surprise it arrived ok. Having the battery out of the phone seemed to be all the 'resetting' it needed.

In the kitchen in work we have a water heater. It's fairly new, only about a month old. It's also not very good, spending most of it's time holding water at around 80°C, not enough for a proper cup of tea.

There's a button to press to force it to reheat the water but it often has the opposite effect. If I press it when the temperatures reading in the 80's, it often drops to 70-odd degrees before slowly climbing.