0 byte files and ll_readdir() error

We're running 1.6b7 and have noticed the following two problems. I'm 
wondering if they're correlated.

1. We get files that are 0 bytes. They have nothing in them.

2. We get these errors across our 30 nodes
LustreError: 7030:0:(dir.c:330:ll_readdir()) error reading dir 
167108765/2378987153 page 13: rc -5
LustreError: 7029:0:(dir.c:330:ll_readdir()) error reading dir 
171699532/2388399554 page 9: rc -5
LustreError: 7027:0:(dir.c:330:ll_readdir()) error reading dir 
171403580/2387428410 page 2: rc -5
LustreError: 6990:0:(dir.c:330:ll_readdir()) error reading dir 
171011300/2386583645 page 8: rc -5
LustreError: 7027:0:(dir.c:330:ll_readdir()) error reading dir 
172286916/2390172901 page 13: rc -5
LustreError: 6990:0:(dir.c:330:ll_readdir()) error reading dir 
172030180/2388919021 page 13: rc -5
LustreError: 7027:0:(dir.c:330:ll_readdir()) error reading dir 
172321971/2390308492 page 3: rc -5
LustreError: 7027:0:(dir.c:330:ll_readdir()) error reading dir 
163603484/1208913504 page 8: rc -5
LustreError: 6990:0:(dir.c:330:ll_readdir()) error reading dir 
172748079/2390802528 page 13: rc -5
LustreError: 9133:0:(dir.c:330:ll_readdir()) error reading dir 
172818070/2390892206 page 2: rc -5
LustreError: 9171:0:(dir.c:330:ll_readdir()) error reading dir 
168359805/2380837293 page 8: rc -5
LustreError: 9187:0:(dir.c:330:ll_readdir()) error reading dir 
163706128/1209056171 page 7: rc -5
LustreError: 9199:0:(dir.c:330:ll_readdir()) error reading dir 
165116087/1211142674 page 0: rc -5
LustreError: 9217:0:(dir.c:330:ll_readdir()) error reading dir 
162005170/1206582728 page 12: rc -5
LustreError: 9216:0:(dir.c:330:ll_readdir()) error reading dir 
162686166/1207618778 page 12: rc -5
LustreError: 6990:0:(dir.c:330:ll_readdir()) error reading dir 
163079284/1208141145 page 3: rc -5

Can someone explain the ll_readdir error?

Thanks

--
Daniel Leaberry
Systems Administrator
iArchives
Tel: 801-494-6528
Cell: 801-376-6411