I am facing a really weird situation. I had this at a few occasions, and probably everytime I was doing this same operation, but was not able to relate this to something. Now, I have found what is causing this. I have an administrative operation on several Web sites that is sending me the file by the use of a Transmit(). The file being sent is having a TXT extension. If I do the process but do not click on the Open option from the browser, everything is ok. But, if I click on Open, which will use Notepad to show me the content of the TXT file, all my cookies of the currently opened Web sites are gone. I have to log in again to each of those site. Basically, if I have Universal Thread open and another site, I have to log in again on both sites. This is something I can simulate from all Web sites I have this functionality on. This seems to be caused by some kind of security. I have running McAfee. I will do some tests but disabling it. But, I was wondering if someone already saw this situation.