I'm having the same issue. None of the apps are working, they all hang the the loading splash.
Last night I installed 2.5 and had no problems. I think I watched a couple movies in XBMP after the install, but I forget if I did that before or after. Today I went and picked up a 160 GB Seagate Barracuda and installed it. The jumper was set to CS. I booted up the Slayer CD and flashed the BIOS to the new executor 137GB+ one (1MB). I did the full format for large HDDs then a full install for large HDDs (5-1 if I remember correctly). I then tweaked the XBMP's config.xml setting my resolution to option 3 and pointed it to the needed shares on my server. All apps hang. I reinstalled once, same prob. Thinking I may have a media problem, I burned a new CDRW, formatted, and did it all over....no help. I then extracted the ISO to a PC across the LAN, reformatted again, then FTP'd everything over which yeilded the same results.
I'm in the Slayer channel now and one of the OPs (Scotsman) suggested that I set the HDD jumper to Master. I did that and that alone didn't get it. Im currently reloading it all again off the CDRW. Nope, still hangs. I'm going to try to flash the EvoX 137 GB Bios and see what happens...nope no good there either.
Any ideas?
UPDATE I just popped the stock 8 GB HDD back in after concern from Scotsman about a possible bad chip. It works fine. Maybe my new HDD's DOA. My brain hurts, I quit for the night.