iPhone users have filled Apple's discussions forums with complaints regarding iPhone software 2.1. In what seems to be a widespread issue, 2.1 iPhones do not check for incoming e-mails automatically, whether the devices are set on a schedule or to push mail. Exchange and MobileMe accounts, which previously responded almost instantly, are also affected by this issue.

There is evidence pointing to the faulty nature of firmware 2.1 within users' failed attempts to disable the auto-lock feature in order to get their e-mails. This would supposedly remove one obstacle, as it forces the device to stay awake. Sadly, the issue remains unchanged. Others have even tried recreating accounts or restoring the phone entirely – again, with no luck.

While everyone has their version of the story – as in, what they think might be wrong – many suggest that the issue is tied to the power state of the iPhone. Basically, as long as the user keeps their iPhone plugged in, the e-mails come flying in. The moment it's disconnected, the background e-mail check suddenly stops.

One of Apple's representatives has also joined in the discussions, offering troubleshooting steps. Of course, it's going to take a lot more than this to calm spirits down. A 2.1.1 software update might just do the trick.

"I just received a telephone call from the same product specialist, and he confirms that 6 other iPhones in their building are exhibiting the exact same problem," wrote one iPhone owner on Apple's forums. "This is a global problem. This in their eyes is a 'major' issue and is getting escalated as we speak."

Apple is yet to respond officially to these issues. What was supposed to fix 3G connectivity issues and app crashes, improve battery life and iTunes backup syncing – iPhone OS 2.1 – has turned out to be just another rotten Apple - the third since the debut of the iPhone 3G.