boot problem

[pkaplan1 at comcast.net]

In the last few days my system has been hanging during boot. 

I get the following error: 

Log of fsck -C3 -R -A -a 
Thu Jun 25 08:18:05 2009 

fsck 1.41.4 (27-Jan-2009) 
/dev/sda2: clean, 31685/6823936 files, 4743378/27274353 blocks 
fsck.ext3: Unable to resolve 'UUID=5af75fba-045b-41c1-ae54-f7c5bc133694' 
fsck.ext3: Unable to resolve 'UUID=27655aac-f0fc-40df-9ba1-8412d584b5c5' 
fsck.ext3: Unable to resolve 'UUID=08c89a6f-7c9c-4f59-b26d-e43921450ad9' 
fsck.ext3: Unable to resolve 'UUID=a21074d2-7e57-4676-aeda-c80b560d9c68' 
fsck died with exit status 8 

The only way to continue booting is by hitting ctrl+d. Booting continues normally and the drives are correctly mounted. 

I've verified that th UUID identifiers that are listed in /etc/fstab match those listed in /dev/disk/by-uuid and are the same four partitions listed above. These correspond to /dev/sdb5, /dev/sdb2, /dev/sdb1 and /dev/sdb6, respectively. 

How can I get this to stop hanging? 
Paul 
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