Microsoft Office Communicator 2007 was recently updated (as mentioned in the Microsoft KB article 954439 http://support.microsoft.com/?kbid=954439) but the location of the hotfix itself has been a mystery to many - not any longer! ;)
Microsoft's sustained engineering folks need and want to track the download of the hotfix and in order to do so each person must request the hotfix at the following address:http://support.microsoft.com/hotfix/KBHotfix.aspx?kbnum=954439&kbln=en-us
The request is quick and easy and once the form is filled out a link to the download (and the password to decrypt the file) will be sent to your email generally within 5 minutes.