since M5 (and now M6) I'm getting this strange boot error about phy0 and fd0:
<3>[ 10.083499] phy0 -> rt2500usb_init_eeprom: Error - Invalid RT chipset detected.
<3>[ 10.083799] phy0 -> rt2x00lib_probe_dev: Error - Failed to allocate device.
<6>[ 10.084143] usbcore: registered new interface driver rt2500usb
<7>[ 10.444856] phy1: Selected rate control algorithm 'minstrel'
<6>[ 10.445862] Registered led device: rt73usb-phy1::radio
<6>[ 10.445888] Registered led device: rt73usb-phy1::assoc
<6>[ 10.445912] Registered led device: rt73usb-phy1::quality
<6>[ 10.446382] usbcore: registered new interface driver rt73usb
<3>[ 21.901556] end_request: I/O error, dev fd0, sector 0
<3>[ 34.086881] end_request: I/O error, dev fd0, sector 0
<3>[ 34.087085] Buffer I/O error on device fd0, logical block 0
<3>[ 46.271248] end_request: I/O error, dev fd0, sector 0
<3>[ 46.271450] Buffer I/O error on device fd0, logical block 0
<3>[ 58.456681] end_request: I/O error, dev fd0, sector 0
<3>[ 58.456884] Buffer I/O error on device fd0, logical block 0
<6>[ 58.558334] Adding 2144668k swap on /dev/sda2. Priority:-1 extents:1 across:2144668k
now as far as I googled, it seems that people who got that phy0 error their wireless card wasn't working. but mine seems to be working fine...
About fd0, I do have a floppy drive, but it was working as far as I remember, and I don't thing it's a coincidence that it break just when I installed M5. Any ideas what it is?

thank you,
Albert