I have not seen this discussed anywhere so I am posting this question. Recently bought a MacBook (MB 13/1.83). As a long time Mac user, I can usually sort out many problems but this has stumped me. The cursor is very slow to repond, or disappears. For example, last night I was editing a Pages document. Everytime I modified some text, for example, introduced a hard return in the text, the cursor disappeared for about 5 sec. then reappeared. The trackpad was unresponsive during this time. I have noticed this with other applicaitons as well, the cursor seems very unreponsive, or there is a long delay before it moves. Anyone experienced this or can make a suggestion as to how to get the trackpad functioning properly again?