This problem may occur if the Web site uses the post-check directive in an HTTP header to perform a lazy update of content on the Web page that you are viewing. For example, this problem may occur if the Web site uses the following custom HTTP header: Cache-Control: post-check=3600,pre-check=7200
If the site administrator removes this custom HTTP header, the problem does not occur.

For an update that resolves this problem, see Microsoft Knowledge Base article 834707.

834707 (http://support.microsoft.com/kb/834707/) MS04-038: Cumulative Security Update for Internet Explorer
   Date         Time   Version            Size    File name
   --------------------------------------------------------------
   14-Jan-2003  14:13  6.0.2800.1159     585,728  Wininet.dll  

SYMPTOMS
When you use Internet Explorer 6 Service Pack 1 (SP1) to connect to a Web site, you may experience either of the following symptoms: • Content (such as images) is not updated, as specified by the Web site.
• Internet Explorer unexpectedly quits or you receive the following error message:
Internet Explorer has encountered a problem and needs to close. We are sorry for the inconvenience