Reconciling is for "reconciling" changes like deletion status or read/unread status.
For the BIS internet POP polling service, the inverval is approximately every 15 minutes. The BES emails are instantaneous. If you need fast email delivery without BES, you could try yahoo or Gmail, or try forwarding mails to your
address. That address delivers mail instantly.
You can't manually cause the handheld to check for new emails. It doesn't work that way. IT you're not using an instant push method, then you need to be patient for POP polling interval. That's just the way it is.