Delay in folder access

[Daniel L. Miller]

I have an XFS partition on simple 4-disk RAID-10 array.  The array is 
mounted at /raid.  I have a variety of subfolders - one of which is 
/raid/data - which in turn has a number of subfolders.

Doing a simple "ls /raid" has no problems.  Similarly, no issues with 
"ls /raid/data/stuff".  But ... executing "ls /raid/data" results in a 
delay, sometimes in minutes, before it returns.

I don't see any errors in dmesg or syslog.  Does this indicate a pending 
crash?

Also, I do have a ".fsr" folder under /raid.  All the folders listed, 
which appear empty, are dated 11/1/2010.  Is it safe to delete ".fsr"?

-- 
Daniel