The new version of SETI@home based on BOINC is going to replace the old software. All data files will change. The PHP SETI@home monitor needs to support the BOINC-based release.
File formats are described here:
http://setiathome.ssl.berkeley.edu/boinc/file_format.html
This is high priority, as the final date (unknown but very soon infering from migration speed) is closer.
Pending to change to BOINC and test.