I talked to Verizon last night and they said they had not heard of this problem.  They went through and did a factory resest of my phone to see if that corrected the problem,  Of course it did not and I had to go and reinstall all my apps and redo everything I had set up.  They told me that if it did it again withing the next few days to give them a call and they would escalate it to HTC and may have to get me a new phone.  I have a feeling since I have seen this with a lot of different threads that this is probably a pretty widespread problem espcially for those that do not delete e-mails.  I had to set mine so that it did not delete from the server though it still deletes from my phone.  I am now using my g-mail though you cannot add any attchments other than pictures whereas the POP3 can add other attachments.