Hello, I didn't touch anything, just booted the hoster's "rescue image".
# cat /etc/mdadm.conf
cat: /etc/mdadm.conf: No such file or directory
# cat /proc/mdstat
Personalities : [linear] [raid0] [raid1]
md0 : active raid1 sda1[0] sdb1[1]
1023936 blocks [2/2] [UU]
md1 : active raid1 sda3[0] sdb3[1]
20479936 blocks [2/2] [UU]
resync=DELAYED
md2 : active raid1 sda5[0] sdb5[1]
277728192 blocks [2/2] [UU]
md3 : active raid1 sda6[0] sdb6[1]
185151360 blocks [2/2] [UU]
[=================>...] resync = 85.3% (158109056/185151360)
finish=5.3min speed=83532K/sec
unused devices: <none>
# mdadm -D /dev/md3
/dev/md3:
Version : 00.90
Creation Time : Sat Mar 19 22:53:25 2011
Raid Level : raid1
Array Size : 185151360 (176.57 GiB 189.59 GB)
Used Dev Size : 185151360 (176.57 GiB 189.59 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 3
Persistence : Superblock is persistent
Update Time : Thu Apr 28 21:23:48 2011
State : active, resyncing
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Rebuild Status : 85% complete
UUID : 1b3668a3:4b6c5593:3d186b3c:53958f34
Events : 0.31
Number Major Minor RaidDevice State
0 8 6 0 active sync /dev/sda6
1 8 22 1 active sync /dev/sdb6