Climbing Memory - IMAP Voicemail

I am using FreePBX Distro 2.9.07 with IMAP Voicemail connecting to a Microsoft Exchange server. I am noticing climbing memory over time that is cleared once the Asterisk service is restarted. I am thinking that this is memory leak related to IMAP Voicemail as I don’t have this issue with other FreePBX Distro. I will try to post this to Digium Asterisk bug list as well but just wanted to see if anyone has a similar issue.