This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
if you're on windows, check the free processexplorer thingie, it's like task manager but shows you a single process in isolation, this should give you an idea if memory leaks are your problem. It's worth reading up on memory leaks in IE.