Moreover, a 10-minute startup time seems incredibly anomalous, especially for a Core i7 laptop, regardless how much stuff I've had open. I've had an early 2011

Moreover, a 10-minute startup time seems incredibly anomalous, especially for a Core i7 laptop, regardless how much stuff I've had open. I've had an early 2011 (Thunderbolt) quad-core 15" MBP. Granted, I put a hybrid drive in it (Momentus XT), but I think the worst case from a resume-reboot was under a minute. I have seen some bad cases, but they were usually things like re-standing up VMs in VMWare (on a dual-core MBP 13), with many, many dozens of Safari tabs open (to where the system was paging considerably). Even then, I think the time to resume was around 3 minutes (closer to 30-35 seconds sans resuming VMs) with a bog-standard 5400rpm hard disk. I have a mid-2011 iMac as well. I've never had a reboot take longer than 30 seconds. 10 minutes is at least an order of magnitude worse. This could be a case of HFS+'s tendency to corrupt (sigh), and as a result, causing issues, or it's some other issue that's triggering an edge-case in resume.