I've had some problems with OWC memory before, with my Tibook G4. I kept getting bad batches of memory, passed the 30 day money back guarantee mark, and continued to get bad batches. I finally had to order from crucial. No problem with their memory. Lost a couple of hundred bucks! I still ordered 4x2gb for my MP 2.8 from OWC because they said they had it in stock and at the time and could ship in 1 day Heres what they say 9 days later:
Order Date Order No. Total Status Shipping
Wed., Jan. 23, 2008 xxxxxx $404.42 Web Order
Your order has been received and in queue to ship as soon as product can be allocated.