We have an issue in some releases of our kernel code. The short of it is that many kernel IOCTLs will fail and cause problems like you are seeing below (Data Abort: Thread=83ae331c Proc=8124b2d0 'filesys.exe' )
The newest released kernels (as of this posting) for our LH7A404 and LH7A400 systems have this fix.
For the PXA270, we are very close to releasing a new kernel that will have this problem fixed. For the time being, add the following to your boot script:
kitl:true
(Can be found in this FAQ:
http://www.logicpd.com/support/faq/faq.php?faq_id=170)
Thank You,
-Mike A.