Damn, that sucks. 
Probably Overhub indeed, as this is the factor that changed. Ideas:
- USB 2.0 vs USB 3.0: Did you use the correct cable in the correct USB port?
- Did you use it without an adapter? If so, you might have been pulling more power than your laptop provided. Try with a suitable adapter ( see Overhub PSU? )
- Did you use it with an adapter? Some adapters are wrongly labeled, not providing the correct amperage for example. See Overhub PSU? again for more information.