Not dodgy, just a sleeping hard drive. Modern HD's sleep when unused and take that long to wake up - that's not really unusual. People just don't notice that as

Not dodgy, just a sleeping hard drive. Modern HD's sleep when unused and take that long to wake up - that's not really unusual. People just don't notice that as much if they have a single HD as that is usually active most of the time you are working. But with 2 HD's (typical SSD + HDD combination) you often have one HD sleeping and will run into this a lot more thereby. There's ways to work around it - putting the page file on the HD which is more active or not allowing the HD to sleep as often. But my favorite would still be to simply prevent Windows from even using the page-file before the memory is at least used up to 50% - which would nearly never happen on my system for example.