Hi guys Purchased a new MacBook Air last Wednesday and have been using it constantly now since and I'm starting to really enjoy the new hardware and software. I am a windows users til last week. Question is, since the MacBook was quite expensive, how long would the system last me before I would start to see noticeable slowing down? I use my system for word, PowerPoint, Excel, basic Internet surfing and some basic Java Programming. Cheers in advance.