[imp] Strange redirect + Apache Segfaults

[Gonzalo Servat]

Hi All,

## Problem 1

Webmail URL: http://www.domain.com/webmail
Redirect URL: https://www.domain.com:80/webmail/mailbox...

On every other login attempt to IMP, IE just hangs after you click on 
"Login" and in Opera it displays "Access to this port is denied for 
security reasons". Fortunately, Opera gives me a hint as to where it's 
trying to go for the error to come up. On the title of the error window you 
can see the URL above (Redirect URL). Notice how it's trying to redirect to 
https (and on port 80) ??

If you click OK and try to login again it usually works and redirects to 
the right place (http://www.domain.com/webmail/mailbox...) - Strange, huh?

Running Apache 1.3.27, PHP 4.3.1, Horde 2.2.3 and IMP 3.2.1

The only difference between my setup and a standard IMP/Horde install is 
the following lines in httpd.conf:

Alias /webmail "/home/httpd/vhosts/webmail/horde/imp/"
Alias /horde "/home/httpd/vhosts/webmail/horde/"

I also added the right <Location ...> directives and modified the webroot 
in registry.php for Horde to match the above. Probably irrelevant, but just 
thought it's worth telling.

## Problem 2

I seem to be getting more and more frequent segmentation faults in Apache 
and they usually come up when using IMP. It will come up with the infamous 
"Cannot find page or server" in IE and in the Apache logs:

[date] [notice] child pid xxxxx exit signal Segmentation fault (11)

How do I troubleshoot these segfaults further?

Thanks in advance for any help.

Kind regards,
Gonzalo