There are some reported technical issues with the Samsung Vibrant after updating it to Froyo 2.2, so Samsung decided to pull it. They are attempting to resolve the issues, but in the mean time here is their official statement from Samsung's Facebook page, "We are continuing to investigate issues that some users have reported while completing the upgrade to Android 2.2. In the interim, we are taking the extra precaution of temporarily suspending the upgrade as a download from Kies. We apologize for the inconvenience and ask that clients contact 1-800-751-4078 or email@example.com if they have any further questions."
We will try to keep you posted with more info as it becomes available. For more details check out the Facebook page here:Samsung Mobile Canada | Facebook