imovie download keeps failing
I have acquired my first ever macbook and attempted to download iMovie from the App Store last night. It keeps getting to around 597mb downloaded and then fails. Rolls back a bit, reattempts to download, fails again. I have several times restarted the download from scratch and each time, it fails at the exact same point in the download. I've read loads of knowledgebase items and tried everything but as I say am new to Macbooks so might be missing something simple.
MacBook, Mac OS X (10.6.8)