Probs w memory size?

Fatal error: Allowed memory size of 16777216 bytes exhausted (tried to allocate 244482 bytes) in /httpd.www/xx/wp-admin/includes/plugin.php on line 4

And this line of code is placed on line 4:
$plugin_data = implode( ”, file( $plugin_file ));

Now as you enlightend people may understand… I am a newbie on this lovely language of php and no programmer at all. I am extreemly grateful to all of you that let me use your stuff. Thanx!

I have this problem now that when I try to add an plug to add extra functionality I get the messege above. I have read some where that it is possible to add more memory but I cant remember where and how…

This is the technical info of my site:

System Information Scan

Operating System : Linux
Server : Apache
Memory usage : 14.76 MByte
MYSQL Version : 5.0.32-Debian_7etch5-log
SQL Mode : Not set
PHP Version : 5.2.6
PHP Safe Mode : On
PHP Allow URL fopen : On
PHP Memory Limit : 16M
PHP Max Upload Size : 12M
PHP Max Post Size : 12M
PHP Max Script Execute Time : 30s
PHP Exif support : yes ( V1.4 )
PHP IPTC support : yes
PHP XML support : yes

Now, I can see that memory limit is 16M I am using 14,76M so… how do I expand the Memory limit?

thanx for helping!