Continental Flight 65 Diverted

Hello
Next week I'll fly Continental to Newark on flight 65, so I've been watching if flights have been on time. However, today I noticed that the flight CO 65 was diverted to Gander, NF! Does anyone know what happened? Is it common?
Thanks
Next week I'll fly Continental to Newark on flight 65, so I've been watching if flights have been on time. However, today I noticed that the flight CO 65 was diverted to Gander, NF! Does anyone know what happened? Is it common?
Thanks