I have been trying for about a week to get my site to work properly using the IPN system. During testing last week, with the IPN system repeatedly hitting my site, I verified that the HTTP 200 OK success code was being sent back to PayPal in the page header. However, the last time the IPN system hit my script page after a test was on Wednesday, 11/20. On Friday, 11/22, I called PayPal tech support and was told the IPN system wasn't working and that the problem had been "elevated" to the engineers' level. No estimated date of it working again. So, I'm wondering if anyone else is having the problem of IPN not working, or is it just me?

So that's the problem!

I just implemented IPN an have yet to see results.

Glad to hear that IPN is not working AND MAYBE it's not my fault. :]

Im banging my head against the same issue. I was getting something this morning, but this afternoon, nothing. The url is valid IPN is on but the logs show no attempts even. Is the IPN system active? How can we debug something like this if our server logs show nothing?

PayPal's IPN is NOT working correctly!
After pulling much of my hair out as well, a couple rewrites, I finally called tech support and explained my lact of getting item_number_x or item_name_x in my IPN reply.
They gave me a canned response that they were working on this issue, I said others say it works fine..... an hour on the phone, some test posts on their end got me a "we'll have someone look at this better and call you back this evening" this did not happen.
This morning I took and duplicated my scripts and only fed the info to myself.... I pick up my posted item_number_x on my IPN script.

James

Well, it appears that IPN is in fact working for me. A slight error on my part had the IPN system looking in the wrong directory for my return script page. Lessons learned: 1) if moving the action script page during testing, be sure to check the form submission page for the correct value in the notify_url input field; 2) that form value appears to override the value of the IPN script URL in the IPN Preferences section of your account profile.

Cheers.