I'm not sure whether this is a technical issue or not but recently while I was working on the project in the lab, I noticed that my Eclipse freezes/ slows down for a while a few times in the day. I first thought that is because I forgot to lock out my account somewhere from other computers. However, as I went to the tutoring tonight, I found out that many people in the room had that same problem at the same time like me. Hence I wonder why this happened and how can I fix it...