Congrats! What kinds of other temperatures are you seeing? If you haven't already downloaded and installed HWMonitor (www.cpuid.com) or SpeedFan (http://www.almico.com/sfdownload.php) I recommend either one highly for helping you monitor and manage operating temps.
One tip, based on LOTS of experience with upgrading the older EX-47* models: keep a close eye on temps for a while, and also check Event Viewer daily for a while for errors and warnings, especially from these sources: WNAS (System log) and MediaSmartServer (App log).
Ed Tittel 2443 Arbor Drive, Round Rock, TX 78681-2160
Bio, resume and list of pubs at www.edtittel.com
Contributing Editor, Tom's Guide
Expert Q'n'A/content for 6 TechTarget.com Web sites