Its a decent wheel I think. Its on a 2010 spesh stumpjumper FSR. DT swiss something or other. Only had it since April but its had plenty of use. Couple of google searches suggests its been a common problem with the back wheel on this particular bike though.
According to my LBS once a couple of spokes have gone theres a good chance the others will have been weakened by riding the bike with the knackered spoke and will probably fail at regular intervals. Dunno how true this is.
Up to now I've managed to replace the broken spokes and true the wheel myself without too much faff.
I'll only save a tenner by doing this myself but like I said, its more that I fancy having a go. What I dont want to do is spend all day on it only to find it hasn't worked and I need to pay a pro to do it properly anyway.