Updates on the three issues mentioned above:
Performance - I think this is taken care of. Intermittent issues are tough to track down, but I put some monitoring/trending software in place that should help in the future.
In fact, right after installing this software, another slowdown started. I caught this culprit, who may have been responsible for the earlier slowdowns. This particular "user" was generating about 50 page hits per second. I manually banned the IP from accessing the server, which got things back to normal. Since the "whack-a-mole" approach is not ideal, I added another automated ban process that looks for these types of automated accesses...hopefully, this will prevent similar abuses in the future.
Front page album updates - as mentioned in another thread - this has been fixed. There's an automated job that updates the 'Most Recent Photos" block on the home page, that failed to make the transition to the new server. It's running again, updates occur hourly.
Failure to remember signon info - is this happening to everyone? I manually login each time, so it's not something I would notice.