OK, after a frustrating few days (as I'm new to Linux) getting my system almost where I want it, it seems to have packed up. Started first with tight vnc refusing to start up with what appears to be a popular "font" error message even though I'd been using the Pi solely through it on and off for over a day. Then SSH packed in, so I got all my keyboard and cables out to see what was happening on boot. All seemed ok, could login but now "startx" generates errors. This all happened after I'd installed "network-tools" in an effort to get my wifi dongle working. May or may not be connected.
Anyway, what I'm wondering about is shut-down procedure, the official FAQ says just unplug it which I do. But I can't help wondering if doing this could corrupt the SD card if Debian is in the middle of doing something, just "unplug" it feels a little reckless, is this really what people do ? I'd have thought using the official shut down procedures for Debian/ Linux would be safer.
So, what is the best way of shutting down ?