Your recommendation for addressing the timeout error for attachments over 500 KB worked on two of th

Your recommendation for addressing the timeout error for attachments over 500 KB worked on two of the three computers experiencing the problem. It turned out to be the Adobe Acrobat plugin causing the error message on those machines. Unfortunately, restarting Tbird in safe mode and consequently restarting my computer in safe mode resulted in the same error message. I've attached a screen grab of the error message so that you can see if it's being generated by Tbird. Additional suggestions would be appreciated.