system software update not progressing

[hal]

I've forced shut down in this situation and it has always come out ok, not that I recommend you do that especially if you aren't backed up... but you are of course... right? When I've done it the computer just started normally - the update was actually completed. But I've NEVER done this on my own computer - just ones that I prep for selling. If the software exploded, there would be no loss.