I let my paranoid self get the best of me. Our small business network consists of 4 Win7 Pro Dell Inspiron 660 PC's. All of the computers are using Outlook 2007 as the email client. All of the computers have been protected by current copies of Kaspersky Internet Security 2015 since late 2014. All systems have been running smoothly. I decided that having an additional layer of protection may be wise in today's hacker/fraudster world and installed current copies of Malwarebytes Pro on each of the four computers on our office network plus an additional 2 computers at my home. The boxed software was purchased from Amazon.com and was installed without any issues. The program updated after installation to the current version of Malwarebytes. We are having a problem with Outlook 2007 on ONE of the computers. When the SEND button in the new message box is clicked a message of (not responding) appears at the top of the new message box. About 20-25 seconds later the email is sent and the sent message is received by the recipient and recorded in the SENT messages folder. This happens every time a message is sent both with and without attachments. Receiving messages is also very slow. I am hoping that there might be some solution to this issue - perhaps with settings, re-installation, or whatever.