I have been on the accu chek combo now since jun 2009.
I noticed someone stated earlier that they didn;t realise the combo is water proof....it is only certified waterproof on leaving the factory, I would never risk going swiming with it, I think its basically splashproof and it would be awful for this to be ruined whilst away due to swimming.
I think the original posters comment related to disconnection from the pump while swimming for 60 mins.
I have been lucky enough to have been abroad on holiday to Egypt 3 times since I have been on the pump, and the way I treat it is I have a break from the pump and revert back to the pen injections, and the lantus for the basal.
This works for me as I have young children, who want to play in the pool, on the beach in the sea, using this method, I dont have to worry about being disconnected for to long, insulin becoming inactive due to the heat and one which I hadn't thought of until reading this thread sand in the pump.
Yes the control may suffer a little, but its a holiday and so long as the bM are being done regular, you can control it.