i have this display problem on IE 8 build 7600.16385

The problem is not present on IE 8 build 7601.17514 and for all other browser like firefox and chrome as you can see in the image below:

Unfortunately IE 8 build 7600.16385 is present over all our production machines and it is not possible to upgrade them at moment.
Do you have any suggestion on how i could probably fix this problem ?
Here all the information about phpMyFAQ installed
phpMyFAQ Version phpMyFAQ 2.7.8
Server Software Apache/2.4.2 (Win32) PHP/5.4.6
PHP Version PHP 5.4.6
Register Globals off
Safe Mode off
Open Basedir off
DB Server Mysql
DB Client Version mysqlnd 5.0.10 - 20111026 - $Id: b0b3b15c693b7f6aeb3aa66b646fee339f175e39 $
DB Server Version 5.5.27-log
Webserver Interface APACHE2HANDLER
PHP Extensions Core, bcmath, calendar, ctype, date, ereg, filter, ftp, hash, iconv, json, mcrypt, SPL, odbc, pcre, Reflection, session, standard, mysqlnd, tokenizer, zip, zlib, libxml, dom, PDO, bz2, SimpleXML, wddx, xml, xmlreader, xmlwriter, apache2handler, openssl, curl, gd, mbstring, mysql, mysqli, Phar, pdo_mysql, pdo_sqlite, sockets, sqlite3, xsl, yaz, mhash, xdebug