Hey Rev. I've seen your posts around before and recognized your handle. Thanks for weighing in.
I'm also on the Linux Ultimate, as are all of my client accounts and company accounts (I work full time for a company and also do freelance consulting), running WP 3.0.1 with the latest version of Contact Form 7.
Things were running BEAUTIFULLY up until about two months ago when emails submitted by forms started going wonky.
Here's where it gets interesting: EVERY single one of my WP installations (all running on GD Linux Ultimate accounts--each with their own account so presumably on different Linux boxes) that use this combo have problems with form mail--and all started at the same time.
I'm running different plugins on each installation and have methodically and meticulously ruled out plugin conflicts (boy was that ever a PITA).
No rhyme or reason for why emails are delayed or don't show up at all sometimes. Everything--everything points to something with GoDaddy.
If it were WP & CF7, this problem would be showing up on all kinds of other hosting providers. That's just common sense, but apparently GD can't see the simple wisdom in that approach.
Here's how I put it to the Level 2/3 techs at GoDaddy: "Software in and of itself does not simply break. Something has to initiate the change. If I didn't update my plugins or my core WP, I didn't change anything. So if I didn't change anything, what changed? Something on your server software or configuration. THAT is what broke the functionality."
I've been working in the internet field for over 17 years now. If you write an app and it works, it will continue to work up and until the system it runs on is changed to the point where the app no longer functions. Doesn't mean the app is broken, it means it's no longer compatible with the core system.
And that, my friend, is what I have been so desperately trying to get GoDaddy to wake up and realize. Hell, if my seven-year-old son can understand it, why can't they?