I have a fresh raspbian image on a class-10 32gb SDHC card in my Raspberry Pi Model B, created according to instructions on the raspberry pi website. My actual internet download speed is >10 mbytes/s.
The pi was booted up for the first time, and I ran sudo apt-get dist-upgrade in lxterminal. It has since been running for over two hours. There was no dialogue, no words, just an endless scrolling of "pi@raspberrypi ~ $" in lxterminal.
When I tried to open a second lxterminal to run Top to see what was happening, hundreds of blank lxterminals opened, which I then had to force close by answering accordingly to a prompt to send it a terminate signal. Eventually all the lxterminal windows vanished. However, the SD card I/O is still constantly lit and the keyboard and mouse have stopped responding.
Is this normal behaviour? How long should apt-get dist-upgrade take under normal circumstances? Should the plug be pulled?