Just got a 2011 MBP to replace my 2009 white Macbook. I swapped the SSD and updated to ML from Snow Leopard. I'm now having real problems with my LAN, which comprises Mac Pro and Synology NAS (both ethernet) and a Virgin Superhub 1 (router/modem). My old MacBook worked fine in this setup and I could transfer files to/from any machine wirelessly. Since getting the MBP however, transferring files in a painfully slow business with many timeouts. This also affects Time Machine backs, which take far longer than they should and frequently fail. Lots of beach ball spinning too and have had to force restart the finder several times. Everything else in the LAN setup is unchanged so what can be causing these problems - MBP? ML? Anyone any ideas? Thanks.