2.4GHz mid-2007 Macbook Pro on Leopard. Ever since getting my new monitor and running my laptop in lid closed mode, I've been getting frequent (3-8 times per day) disconnections from my wireless network. One moment the Airport menu bar icon shows full strength, next moment it's disconnected. I never had any trouble in lid open mode. Is this a known issue when running a MBP in with the lid closed?