The problem vanished by itself some time today. I guess that means it was my ISP.

<p>Yesterday I tried to send an email and noticed that it was still in the queue. I sent it repeatedly and it stayed there... Eventually I got an error message from something called TerInternetget, file: TerPict68498.t... that was what it said on the top of the error message box. The error message itself says:  "could not open the file. " Then pegasus stops responding and I have to crash it shut when Windows offers to look for a solution. </p><p>Turns out the recipient did get the email from me, about 92 times which is probably how often I hit send yesterday. </p><p>About a week before this happened, Pegasus started taking a very long time to open messages. e.g 30 seconds or longer. Today I installed the latest version but it didn't help at all.  </p>