I recently just upgraded 5 of our cores (we have 6 and 5 of them are dark cores) and now newly installed agents aren't getting LD Management agent installed on three of the servers (those servers had what seemed like minor errors during SP1 upgrade) and the cores aren't able to properly manage newly installed agents.
I have a call in to support on the issue, but they haven't exactly been responsive considering the seriousness of the issues. The support person I was talking to even kicked me off the call to take another call.
I would say that so far our experiences with 9.5 and SP1 have not been good. Hopefully, they can integrate Shavlik into the core product and make it a lot more stable and reliable, not to mention make upgrades cleaner.