I quietly posted SimplePie 0.96 a few days ago, after having it in place in SimpleReader for about a week before that. So far, so good.
For those of you currently using SimplePie, this new version makes more strides towards improving support for sucky feeds, tested support for PHP 5, and other bits of fine-tuning.
You can download it, read the documentation for changes in this version, and report bugs and get support.