Thanks Michael,
I chnged ttyS0 and that error gone, i am getting some more after booting
journald starting. Commit interval 5 seconds
<4>EXT3-fs warning: maximal mount count reached, running e2fsck is recommended
EXT3-fs warning: maximal mount count reached, running e2fsck is recommended
<6>EXT3 FS on mmcblk0p2, EXT3 FS on mmcblk0p2, internal journal
internal journal
<6>EXT3-fs: recovery complete.
EXT3-fs: recovery complete.
<6>EXT3-fs: mounted filesystem with ordered data mode.
EXT3-fs: mounted filesystem with ordered data mode.
VFS: Mounted root (ext3 filesystem).
VFS: Mounted root (ext3 filesystem).
<6>Freeing init memory: 132K
Freeing init memory: 132K
<6>udevd version 124 started
udevd version 124 started
<3>Buffer I/O error on device mtdblock1, logical block 0
Buffer I/O error on device mtdblock1, logical block 0
<3>Buffer I/O error on device mtdblock1, logical block 1
Buffer I/O error on device mtdblock1, logical block 1
<3>Buffer I/O error on device mtdblock1, logical block 2
Buffer I/O error on device mtdblock1, logical block 2
<3>Buffer I/O error on device mtdblock1, logical block 3
Is this related partition issue? Do i need to format the SD card again.
__Sanjeev