Vendor Other World Computing says it is shipping new 4GB and 6GB RAM upgrade options for Apple's new unibody notebooks, in spite of alleged upgrade issues. The kits cover the 13-inch MacBooks and 15- or 17-inch MacBook Pros, and in the case of the 6GB bundles, are said to push memory capacity beyond what normal upgrade options allow. Apple normally limits maximum RAM capacity to 2x2GB, but it is
