This week's book giveaway is in the General Computing forum. We're giving away four copies of Arduino in Action and have Martin Evans, Joshua Noble, and Jordan Hochenbaum on-line! See this thread for details.
Our Websphere app server has recently been upgraded to version 188.8.131.52 on both Dev and QA. One of our apps on DEV failed after the upgrade -- I should say the app was ok initially after the server upgrade and the problem only occurred after we edited an simply jsp page and redeployed the app to the DEV server. We found that an older version of a jar file causes the problem in upgraded server environment and problem resolved after we replace the jar file with a new one.
So after QA server was upgraded to the version 184.108.40.206, I expected that app on QA to fail because of that jar file. But it didn't fail. I have the same package (old jar file in it) redeployed to QA server and the app still worked. I am a bit puzzled by that. That is why I am wondering if cache may play a part in this?