There is no matching kmdo-sysprof package for kernel 2.6.23.15-80.fc7.
sysprof-kmod-1.0.8-1.2.6.23.15_80.fc7 has been submitted as an update for Fedora 7
sysprof-kmod-1.0.8-1.2.6.23.15_80.fc7 has been pushed to the Fedora 7 stable repository. If problems still persist, please make note of it in this bug report.