>>Hi,
>>
>>I have noticed that the CPU usage of my PC (Windows 7 Pro with 16 GB ram) goes up whenever I start replying to an email. And the longer I reply (or stay in the Reply mode) the higher the CPU until the entire Outlook stops responding. And then I have to close Outlook. As soon as I close it, the CPU goes down.
>>
>>What could be causing CPU to go up when replying?
>>
>>UPDATE. Another thing I noticed in Task Manager. When I open Outlook, it's memory is no more than 80K. As soon as I click on Reply (to any message), the CPU jumps up from 0 to 20 or 25 right away. The Memory starts growing very fast. I had to cancel Reply when the memory was 196K. So far, Googling for this specific issue didn't produce a solution.
>
>Finally fixed the problem. I had an outlook.pst with emails up to 3-24-2015 that didn't produce the memory leak problem. Here are the steps I created and executed:
>1. Created empty pst outlook_from_3_24.pst. Created two folders Inbox and Sent
>2. Moved all email messages dated from 3-24-2015 from the 'corrupted' outlook.pst to the outlook_from_3_24.pst
>3. Replaced the 'corrupted' outlook.pst with the 'clean' one with messages up to 3-24-2015
>4. Moved all emails from outlook_from_3_24.pst into this outlook.pst
>
>Now outlook.pst has all messages (maybe even extra) and it does not produce memory leak when replying to email.
>Now I have a psychological problem; every time I reply to email I open Task Manager and watch for CPU and memory of Outlook.exe. When I don't see the memory and CPU going up, I have a techno-orgasm. :)

That's better than the heart attack you were having earlier :)

Glad you got it fixed.