Errors in IE7 after 2.08 upgrade

I do not see this error but a customer using IE7 emailed me:



Warning: gethostbyaddr() [function.gethostbyaddr]: Address is not a valid IPv4 or IPv6 address in /home/today7/public_html/addons/access_restrictions/func.php on line 206



Warning: gethostbyaddr() [function.gethostbyaddr]: Address is not a valid IPv4 or IPv6 address in /home/today7/public_html/addons/access_restrictions/func.php on line 207





Also, the first few characters of the “Categories” navigation list on the left side of the page are being cut-off.



Note I am not getting this error in IE8



Any ideas on what it is?