I've just told mine to do a full system restore...
Don't suppose it will help for a minute, but I just tried downgrading to FW3.15 (official) and then upgrading to FW3.41, neither of which fixed the issue.
Aaaaaaah... the joy of having the flu. I've slept so much during the day that it's 4am and I'm still awake!
60GB (120GB WD Scorpio Drive) PS3 (CECHA01, NTSC), 3.7OFW
60GB (640GB Samsung Drive) PS3 (CECHC04, PAL), Kmeaw 3.55, Repaired (Dead Laser)
PSP-1003 FAT, CFW5.00 M33-6 & Prometheus v2
X-Box 360 Xenon (JTAG'ed, 500GB HDD)