actually, me and my friend have similar issues.... it turned out that I bought a new 2gig M2 card as soon as i debranded, but my 2gig was a cheap brand and had a low write speed... so as a result, he could record a longer video on his "stock" 512 card... then me with ym 2gig.... needless to say, when we switched memory cards the problem went away.... just to tie up the story, i returned the mem card and bought a sandisk 1gig, im happy now =)