Double quote and apostrophe problem

[Abram10@xxxxxxx]

  Hi.  Ever since I have had X, I couldn't get the doublequote/apostrophe key to work.  It worked fine on the console, but under X, with any window manager, with any program, I had to press the key twice to display anything (this "anything" was not a real " or a '; it looked similar, but, when opened up in a hex editor, anything containing it showed two bytes.).  How can I alleviate this problem?