In the last few weeks, we've seen some wierdness after the application server had been running for a while. After an app server restart, the application would work fine but after 2-5 hours, action links stopped hitting the seam actions. The page quickly refreshes and no content is changed.
Once it happens in one portlet, it seems to affect the entire application. It doesn't show any error messages, the logs look clean.
Has anybody seen anything similar to this? Is there anything in specific I should be troubleshooting?