According to Intel spec; Dual channel DDR can be named as channel A and B. In 8INXP, dimm slot 1 and 3 are channel A, dimm slot 2 and 4 are channel B. Dual channel mode will only work with DDR memory modules inserted in dimm slot 1&2 or dimm slot 3&4. DDR memory inserted in dimm slot 1&4 or 2&3 will only work as single channel mode, and only channel A is available. Memory in channel B will not be detected.
Norton Internet Security bundled is full version software with 90 days free of charge update. There is no problem to use the software after 90 days. However, if you need the feature of LiveUpdate, please renew the subscriptions with the software vender, Symantec.
Based on Intel P35 and P965 chipset specification, when enabling ATi Crossfire technology please use 2 pieces of ATi VGA cards along with CrossFire connectors then please use CrossFire bridge interconnect to link the 2 VGA cards together.