Often my BB won't push the data automatically to me. I had to manually browse a webpage to force the BB network to work, then all my BBM and Emails start coming in. And this work for only one time, then after few mins, I have to do again and again to receive my datas again.
I'm on VZW Tour Unlocked with my GSM Network in Indonesia. And this happen too with when I use Rogers Bold Unlocked.
Network issue? My brothers and sisters' BB don't experience that problem when I had it, and we're all using the same provider.