Exchange server/ push mail not syncing consistantly?

[jpeepers]

I am having issues with my Touch not downloading my email consistently. I have it setup with my work exchange server to download as new items arrive. Sometimes it works great and I get messages just as they arrive but other times they will not show up on the phone until I do a manual "send/receive"? I checked my phone this morning and had 0 new messages so I hit send/receive and it turns out I had 14 emails and they were sent last night?

I had the exact setup on my Mogul and I never had a issue with this at all. Has any one else seen this? I am missing something/setting etc?

I am currently running the July 10th ROM.

Thanks,
JP