How do you get selenium to recognize that a page loaded?

Question

In certain unknown situations selenium does not detect that a page has loaded when using the open method. I am using the Java API. For example (This code will not produce th

Answer 1

Enabling the 'multiWindow' feature solved the issue, though I am not clear why.

SeleniumServer(int port, boolean slowResources, boolean multiWindow)

SeleniumServer server = new SeleniumServer(4444, false, true);

Any clarification would be helpful.