When you open a Dashboard with FastWorklog Gadget on IE; It may occur that displayed Worklog are not the same.

Root Cause : IE seems to apply different rules than other browsers for caching AJAX request.
The REST Call in charge of retrieving Worklog is cached by IE with a HTTP Code 304 (Not modified).

Other similar issues with HTTP SSL can occurs, see following links :

• https://confluence.atlassian.com/display/JIRAKB/Menus+and+Gadgets+Cached+Incorrectly+by+Internet+Explorer+8+When+Accessing+JIRA+Through+Apache+Over+SSL
• https://developer.atlassian.com/display/GADGETS/Managing+Caching+for+your+Gadget

Investigation :

• Try to enforce nocache on these REST calls.