Good news for X10 owners! A software fix that will improve and lower battery consumption is already in the works. One of our friends (Rahul) came across a comment from SE Answers team on their facebook page saying that an update is on its way and that it will double the battery life of the X10. However, no changelog is available and no release date for the new update.
This only shows that SE is aware of the battery issues that X10 users are experiencing. I just hope they also have a fix for the Wi-Fi problem.