Palm reported more than a half a billion dollars of net losses in its fiscal second quarter as it lost more customers to rivals Apple and Research In Motion (RIM), maker of the BlackBerry.

The maker of the Treo smartphone said its second quarter net loss widened to $506.2m, or $4.64 per share, from a loss of $8.85m, or 9 cents per share year earlier. Shares fell 11 per cent in after hours trading.