First off, I have to note the customer PCs at issue are not using "Genuine" M$ products. That said, Internet Explorer 6.0.2800... on Windows XP cannot (any longer?) subscribe email addresses to a Simplenews newsletter via the newsletter block, while Firefox 1.5.0.6 and Opera 9.00 both can. Platform: LAMP, Drupal 4.7.2, "simplenews.install,v 1.1.2.1 2006/06/23 14:50:50 driesk" (newest file in release). I've searched the forums and mailing list archives (http://lists.drupal.org/) and haven't found anything relevant yet. Can anyone suggest a solution or somewhere to start looking for one? Potentially Related Forum Posts: - Not Able to Login with Internet Explorer, http://drupal.org/node/19835 - destroy session cookie to prevent multiple domain cookies on session_regenerate (referenced in post above), http://drupal.org/node/60584 Thanks for any help you can offer. AD Marshall Canada & Saigon, Vietnam -- AD (Andi) Marshall Cell: +84 (0)903871313 eMail: admarshall@gmail.com Zone: ICT (IndoChina Time, GMT+7) Web: HøLUG - http://h0lug.sourceforge.net Post: HoChiMinh City (ex/or SaiGon), VietNam Quote: People say believe half of what you see, son, ............................................ and none of what you hear. Source: Marvin Gaye, I Heard It Through The Grapevine (1968)