I want to report this as it seems to be a bug.Opening pdf attachements only works in FireFox but not in IE8.The matter is also discussed in this thread but nobody seems to have a solution:http://community.getk2.org/forum/topics/attachments-problem?commentId=3536014%3AComment%3A60756I hope the dev team will look in to this problem since it's really a 'show stopper' for us in using K2 for our customers.We use:Joomla 1.5.18php 5.2.11mysql 5.0.77Apache/2Thanks a lot