Cannot send comments

Problem:
I try to send comment, but database wont accept it.

Sollution:
browser field in database is omited on 70 chars. Some browsers (Mozilla firefox 0.9.2) generate string with more than 70 chars so Insert script get error.
open include/class_pollcomment.php
search for string $agent
replace line
$agent=@getenv("HTTP_USER_AGENT");
with
$agentAll=@getenv("HTTP_USER_AGENT");
$agent=substr($agent,0.6

;
This will trim string to 69 characters

...
$agent=substr($agentAll, 0 , 69 );