Watching audit.log, I notice that when HAL probes my 5-in-1 card reader once a
second, it's logging denials..

type=AVC msg=audit(1135742565.419:42026): avc:  denied  { read } for  pid=4504
comm="hald-addon-stor" name="ubc" dev=tmpfs ino=13246
scontext=system_u:system_r:hald_t:s0 tcontext=system_u:object_r:device_t:s0
tclass=blk_file
type=SYSCALL msg=audit(1135742565.419:42026): arch=c000003e syscall=2 success=no
exit=-13 a0=7fffffc0ce38 a1=0 a2=0 a3=8 items=1 pid=4504 auid=4294967295 uid=0
gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 comm="hald-addon-stor"
exe="/usr/libexec/hald-addon-storage"
type=CWD msg=audit(1135742565.419:42026):  cwd="/"
type=PATH msg=audit(1135742565.419:42026): item=0 name="/dev/ubc" flags=101 
inode=13246 dev=00:10 mode=060640 ouid=0 ogid=6 rdev=b4:10
type=AVC msg=audit(1135742565.431:42027): avc:  denied  { read } for  pid=4498
comm="hald-addon-stor" name="uba" dev=tmpfs ino=13237
scontext=system_u:system_r:hald_t:s0 tcontext=system_u:object_r:device_t:s0
tclass=blk_file
type=SYSCALL msg=audit(1135742565.431:42027): arch=c000003e syscall=2 success=no
exit=-13 a0=7fffffb52e3a a1=0 a2=0 a3=8 items=1 pid=4498 auid=4294967295 uid=0
gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 comm="hald-addon-stor"
exe="/usr/libexec/hald-addon-storage"
type=CWD msg=audit(1135742565.431:42027):  cwd="/"
type=PATH msg=audit(1135742565.431:42027): item=0 name="/dev/uba" flags=101 
inode=13237 dev=00:10 mode=060640 ouid=0 ogid=6 rdev=b4:00
type=AVC msg=audit(1135742565.435:42028): avc:  denied  { read } for  pid=4527
comm="hald-addon-stor" name="ube" dev=tmpfs ino=13394
scontext=system_u:system_r:hald_t:s0 tcontext=system_u:object_r:device_t:s0
tclass=blk_file
type=SYSCALL msg=audit(1135742565.435:42028): arch=c000003e syscall=2 success=no
exit=-13 a0=7fffffe00e36 a1=0 a2=0 a3=8 items=1 pid=4527 auid=4294967295 uid=0
gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 comm="hald-addon-stor"
exe="/usr/libexec/hald-addon-storage"
type=CWD msg=audit(1135742565.435:42028):  cwd="/"
type=PATH msg=audit(1135742565.435:42028): item=0 name="/dev/ube" flags=101 
inode=13394 dev=00:10 mode=060640 ouid=0 ogid=6 rdev=b4:20
type=AVC msg=audit(1135742565.699:42029): avc:  denied  { read } for  pid=4502
comm="hald-addon-stor" name="ubb" dev=tmpfs ino=13244
scontext=system_u:system_r:hald_t:s0 tcontext=system_u:object_r:device_t:s0
tclass=blk_file
type=SYSCALL msg=audit(1135742565.699:42029): arch=c000003e syscall=2 success=no
exit=-13 a0=7fffff99ee38 a1=0 a2=0 a3=8 items=1 pid=4502 auid=4294967295 uid=0
gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 comm="hald-addon-stor"
exe="/usr/libexec/hald-addon-storage"
type=CWD msg=audit(1135742565.699:42029):  cwd="/"
type=PATH msg=audit(1135742565.699:42029): item=0 name="/dev/ubb" flags=101 
inode=13244 dev=00:10 mode=060640 ouid=0 ogid=6 rdev=b4:08