This one is for all Aware IM users on a Mac.
Setting memory for the Aware IM server in a usual way does not work on a Mac. You shouldn't use the Settings button on the Aware IM Control Panel to do this.
You need to do this instead:
1) Open the file AwareIM.app/Contents/Info.plist (Show Package Contents for the AwareIM application and then go inside the Contents folder to find this file)
This should start the appropriate editor for this file. The editor should show a tree
2) In this editor go to Root/Java/VMOptions and change the -Xmx96m setting to something bigger for example -Xmx512m
3) Save the file
4) Restart Aware IM