Mountain Lion download stalling at 53.25mb
I am running an iMac 10,1 with Snow Leopard 10.6.8 and purchased Mountain Lion yesterday but the download stalled at 53.25mb. I have sufficient Hard drive space and Wifi signal but it won't go any further. I tried re-lanching the App Store, then re-started my Mac and then finally stopped the download and started again but it got to the same point and stopped.
Any help would be much appreciated as I have exhausted all avenues I can think of.
iMac