IE8 session/cookie problem - SOLVED

[eluser]GlennJ[/eluser]
OK, I have worked this out...

Basically the session was getting destroyed as the user agent didn't match! For some reason when I got redirected back from PayPal IE8's agent string was different!

The session had

Code:

"Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0;"

but the browser gave

Code:

"Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0;"

As you can see, one says "MSIE 8.0" and the other "MSIE 7.0"!!!!???? This must be something to do with IE's compatibility mode I'm presuming.

Setting

Code:

$config['sess_match_useragent']    = FALSE;

fixed it.