[TYPO3] Image Processing test fails if the test runs more than 30sec.

[Matyi Gábor]

Hi!

I configure a new typo3 installation. If I select the install tool/Image 
processing/Reading image formats test, after 30 sec I get this screen.

Server error!

The server encountered an internal error and was unable to complete your 
request.

Error message:
Premature end of script headers: index.php

If you think this is a server error, please contact the webmaster.
Error 500

I checked on the terminal, that during this 30sec the server did the test, 
f.e. with ps I see this /usr/bin/convert -geometry 170x136! -colorspace 
RGB -sharpen 50 -quality 
70 /var/www/vhosts/myinstallation/typo3/sysext/install/imgs/jesus.jpg[0]

but after 30sec the I geth this server error. Of course the max_execution_time 
in the php.ini is not 30 but 90, i checked it with phpinfo(); And other 
funciton f.e. check and update reference index can run more than 30sec.

We'd like why this error comes on our server? We experienced that every time 
if the imagemagick has to convert more images, in this case we get this 
premature end of script header error. We'd like to solve this error on our 
server, but nobody can helped us. Does anybody have any idea?

Gabor