Startup time is also affected if a disc is presant
i have a mod'ed x2 bios (no flubber) also set to boot boot.xbe not default.xbe from the disc.
hence booting with a xbox game left in the drive will still go to the dash of choice (hmm wonder what that might be)
(used to drive the missis crazy when i'd leave a game in and she'd have to get tup to eject it)
anyway back to point, we typically have a disc in, either a dvd, game or disc with divx's on. the drive searches for the xbe before loading a xbe from the HDD (you can see this on a x2 bios without flubber as the x2logo at the bottom will only appear when it loads the xbe - put a disc with avi's on and see)
when there is no disc, (no flubber remember) it boots with the big x (which again you can change the colours - mines white now) for 2 sec's (time to init the hdd) shows the x2 logo then loads the xbmc logo
(less than 4 secs total)
with a disc its the same first step, then the disc spins to search for the boot.xbe (the hdd also inits in this time), then the x2 logo and then xbmc (more like 8 secs)
my sisters is softmodded and the startup (with flubber) to logo does take 10 without a disc and about 15 with a disc in
both are set to dhcp, but same if connected / not connected to network
the time from the logo to the home screen in xbmc can vary again (having a disc in certainly effects this)
lately xbmc seems to render the background image, start to scroll the menu and then wait until it knows what to render before scrolling the menu, graphics and rss feeds on.
much faster without a disc in
(assume its my custom home.xml thats causing this but delay is weird)