iPad email notifications take much longer than on iPhone

Hi,

On my iPad 3 with iOS 5.1.1 the push notifications for gmail (exchange) take several minutes to arrive whereas on my iPhone 4S with iOS 5.1.1 the
Push notifications are instantly. I have already tried deactivating my iCloud account and retting my network settings but it doesn't make any difference.

Anybody experiencing the same issue?

Today the push notification for gmail on my iPhone was slow too. Took about 2 minutes after I've sent it. The official gmail app got it instantly.