It is a virtual certainty that setting the synch interval will cause severe problems on some networks--and I don't mean "it will clog up your network" (although it probably will, if you have hundreds of users), I mean "you risk rendering your Mac Mail client (and perhaps your connection to the internet) virtually useless".

Rather than trying to explain the technical reason why I'm concerned I suggest you try composing an email while online at a Starbucks with the synch interval set to a minute. If you see seriously erratic behaviour like sluggish response to the keyboard, edits failing to take, or inability to send mail... you have probably caused the problem by setting the synch interval crazy-low in your effort to simulate the "push" that many of us thought Apple had promised us in exchange for enduring the silly "MobileMe" name.

(And BTW, please view the WWDC before you quote the current verbiage on the MobileMe web pages--like many others, I came away from WWDC with the strong impression that we were getting push for our desktop apps.)

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PUSH is the key word. Watching WWDC is what got me to finally get an iPhone as it had everything I was looking for (except the 60GB capacity). The demonstrations was seeing a push both from and to exchange is great. MobileMe was supposed to do the same for .mac users.

Pushing is much more desirable than sync.

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