Why those the mmc give this error?

Hi all,
i have a problem with the mmc-card on Apalis-T30 and V2.6 kernel version 3.1.10-V2.6b2+g34c5824
The kernel log has this prints:

[ 1333.563161] mmcblk0: error -110 transferring data, sector 435150, nr 24, cmd response 0x900, card status 0xb00
[ 1333.575131] end_request: I/O error, dev mmcblk0, sector 435150
[ 1333.580997] end_request: I/O error, dev mmcblk0, sector 435152
[ 1333.586860] end_request: I/O error, dev mmcblk0, sector 435154
[ 1333.592717] end_request: I/O error, dev mmcblk0, sector 435156
[ 1333.598568] end_request: I/O error, dev mmcblk0, sector 435158
[ 1333.604411] end_request: I/O error, dev mmcblk0, sector 435160
[ 1333.610254] end_request: I/O error, dev mmcblk0, sector 435162
[ 1333.616097] end_request: I/O error, dev mmcblk0, sector 435164
[ 1333.621941] end_request: I/O error, dev mmcblk0, sector 435166
[ 1333.627795] end_request: I/O error, dev mmcblk0, sector 435168
[ 1333.633641] end_request: I/O error, dev mmcblk0, sector 435170
[ 1333.639484] end_request: I/O error, dev mmcblk0, sector 435172
[ 1333.645527] Aborting journal on device mmcblk0p2.
[ 1334.047005] EXT3-fs (mmcblk0p2): error: ext3_journal_start_sb: Detected aborted journal
[ 1334.055365] EXT3-fs (mmcblk0p2): error: remounting filesystem read-only
[ 1585.006188] mmcblk0: timed out sending r/w cmd command, card status 0x400b00
[ 1585.013297] mmcblk0: command error, retrying timeout


has any one this error before?
Need your help, on how to solve this issue.
Many thanks