Plenty of stuff in release notes (PS: we currently has a similar problem with high CPU and memory utilisation) :-(
Release Number 8.1.401.24 [11/27/13] – Hot Fix
A memory leak, which occurred when an agent opened the Contact History or the Interaction History and then selected an interaction to view the interaction details, has been fixed. (IW-7669)
Release Number 8.1.401.19 [09/26/13] – Hot Fix
A memory leak that occurred during the handling of an Outbound interaction in Pull Preview mode has been fixed. (IW-7428)
Release Number 8.1.401.06 [05/30/13] – General
A memory leak has been fixed for the internal Instant Messaging feature. (ER# 323146705)
Release Number 8.1.401.06 [05/30/13] – General
For ASM campaigns, the loading of Call Processing Ports has been optimized to prevent memory usage issues. Previously in this scenario in environments that have a very large number of call processing ports visible to agents, there was a large usage of CPU bandwidth and memory. (ER# 320490447)
Interaction Workspace no longer has a memory leak in the following scenario: a supervisor/Team Lead executes a new operation on interaction(s) in a Workbin/Queue while a previous bulk operation is still in progress. (ER# 319927133)
Release Number 8.1.301.17 [12/21/12] – Hot Fix
Interaction Workspace no longer consumes a large amount of memory when it cannot connect to the backup SIP Server due to a SessionID mismatch between the primary and backup servers. Previously, if SIP Server was configured in Hot Standby and an HA Session ID mismatch occurred, Interaction Workspace memory increased constantly until an out-of-memory situation occurred and Interaction Workspace ended unexpectedly. (ER# 310843119)
It is now possible to upgrade Interaction Workspace to 8.1.3 by using ClickOnce on a Workstation where release 8.1.2, or earlier, was installed by using ClickOnce. Select the "64-bits deployment mode" option in the Interaction Workspace Deployment Manager. When this option is validated, the upgrade is permitted; however, the deployment is 64-bits ready instead of being forced to 32-bits, which results in higher memory consumption on 64-bits operating systems. (ER# 306600352)
Runs as a 32-bit application on 64-bit platforms—this feature decreases the memory footprint by 30%, which enables resources to be saved when Interaction Workspace runs in a Citrix environment
Release Number 8.1.300.17 [07/31/12] – General (Under Shipping Control)
The memory footprint of Interaction Workspace has been greatly decreased in environments where the quantity of information that is downloaded from Management Framework is a limiting factor. This typically occurs if one of the values of the teamcommunicator.list-filter-showing option is Agent. (ER# 299688471)
