Since installing Office for Mac 2011 (Home & Business edition with Outlook) 6 weeks ago everything on my MAC Book Pro/OS X Lion has slowed to a totally unacceptable speed. The annoying little coloured circular icon rotates for minutes at a time when trying to open Word, Outlook etc. When i'm in Outlook if I select Calendar it takes over two minutes to open. Typing emails is just as irritating as each letter jerks and pauses as I depress each key. All programs appear to be affected and it is getting worse by the day. My address book also keeps adding empty entries for no reason. The last time over a 1,000 blank entries appeared which I immediately deleted. Why is this happening? Should I uninstall Office for MAC 2008? Are they clashing or is there another reason? It has only started since I installed Office for MAC 2011 & OSX Lion. Prior to that I was operating OSX Snow Leopard and Office for MAC 2008. Laptop has 2+2gbRAM & 250gb disk with 136gb available.