Memory Full message on DR-05

[steve o'neill]

i have a dr-05 w/the stock 2 gig memory card. according to the manual i should have over 3 hours of recording time when set to WAV, 16 bit, 48 kHz. yet when i try recording band rehearsals i get a "memory full" message midway through our 2nd song. i don't get it. i even made sure there was no previously recorded data taking up storage. am i overlooking anything here?