Yes! I have a user that mentioned this same thing to me. CSV imports sitting in Pending for a few minutes (no other imports pending or processing at the same time). When I asked her to show me it took about 5 minutes and then finally kicked off. I haven't seen the same thing personally, but she said it's happened a number of times. I asked her to grab 4-5 separate examples with screenshots and then I'd take it to support. If you get a defect filed, send it my way and I'll tag onto it.