Sony Computer Entertainment is reporting some possible problems with the promised compatibility of existing Playstation software with the upcoming Playstation 2. While the company insists that most older games will function perfectly, several older Playstation titles may have problems with images or sound when played on the newer console. Sony has yet to nail down the exact nature of the problem, hinting that most of the difficulties are with third party games that bypass Sony's APIs and write directly to the hardware. Sony has promised more details, including a list of incompatible games, when it has better determined the nature of the problem.