Date index for Oct 2003

I've just upgraded  from suse 7.3 to  Suse 8.2 with apache 1.3.27 and 
mod_php/4.3.1 and I can't access the project page anymore. I keep having 
the following messages:

*Warning*: Cannot modify header information - headers already sent by 
(output started at /srv/www/htdocs/achievo.0.8.4/class.project.inc:182) 
in */srv/www/htdocs/achievo.0.8.4/atk/class.layout.inc* on line *100*

*Warning*: Cannot modify header information - headers already sent by 
(output started at /srv/www/htdocs/achievo.0.8.4/class.project.inc:182) 
in */srv/www/htdocs/achievo.0.8.4/atk/class.layout.inc* on line *101*

*Warning*: Cannot modify header information - headers already sent by 
(output started at /srv/www/htdocs/achievo.0.8.4/class.project.inc:182) 
in */srv/www/htdocs/achievo.0.8.4/atk/class.layout.inc* on line *102*

*Warning*: Cannot modify header information - headers already sent by 
(output started at /srv/www/htdocs/achievo.0.8.4/class.project.inc:182) 
in */srv/www/htdocs/achievo.0.8.4/atk/class.layout.inc* on line *103*

*Warning*: Cannot modify header information - headers already sent by 
(output started at /srv/www/htdocs/achievo.0.8.4/class.project.inc:182) 
in */srv/www/htdocs/achievo.0.8.4/atk/class.layout.inc* on line *106
*
Is there something I have to change in the apache or php configuration?

I've else tested version Achievo-1.0rc1. The upgrade went fine  after 
adding the customer.currency column and everithing seemed to work 
smoothly, but if I try to logout I can never login again until I 
manually delete the achievo cookie from my browser.

Thank you to everybody

Gianluca Ghelli