Processes stuck in nfsreq

Since updating pointyhat to tonight's 6.0 sources (previously from
about a month ago), I'm having processes locking up in state nfsreq.
I confirmed that directio was disabled.

This is a cvs update from repoman (mounted via NFS with the following
options:

repoman:/r              /repoman/r      nfs     ro,bg,intr,soft,nodev,nosuid 0 00

db> tr 22402
Tracing pid 22402 tid 100161 td 0xc3a99170
sched_switch(c3a99170,0,1,120,b08c87ee) at sched_switch+0x115
mi_switch(1,0,c06e61e4,1ab,1) at mi_switch+0x1d3
sleepq_switch(1,c06e2b19,18e,1,1) at sleepq_switch+0x10d
sleepq_wait_sig(c7acb980,0,c06e3e0f,dc,0) at sleepq_wait_sig+0xf
msleep(c7acb980,c076f520,153,c06f1e45,0) at msleep+0x21e
nfs_request(c39c1cf0,c4355c00,3,c3a99170,c3c0b300) at nfs_request+0x762
nfs_lookup(ee15fb84,c3a99170,c3a99170,c3a99170,ee15fc38) at nfs_lookup+0x2f8
lookup(ee15fc24,c35bb400,0,a7,8) at lookup+0x274
namei(ee15fc24,108,c06e3d30,8,c073b9c8) at namei+0x27d
stat(c3a99170,ee15fd14,c06fecb7,3ad,2) at stat+0x4f
syscall(2f,80c002f,bfbf002f,80ce0e0,283aaf60) at syscall+0x137
Xint0x80_syscall() at Xint0x80_syscall+0x1f
--- syscall (188, FreeBSD ELF32, stat), eip = 0x28316b1f, esp = 0xbfbfeb8c, ebp = 0xbfbfec08 ---

db> show lockedvnods
Locked vnodes
0xc5ccd9b4: tag ufs, type VDIR
    usecount 6, writecount 0, refcount 9 mountedhere 0
    flags (VV_OBJBUF)
     lock type ufs: EXCL (count 1) by thread 0xc3cdc170 (pid 5840)
        ino 14110529, on dev twed0s1f (232, 7)
0xc5512114: tag ufs, type VREG
    usecount 1, writecount 0, refcount 240 mountedhere 0
    flags (VV_OBJBUF)
     lock type ufs: EXCL (count 1) by thread 0xc9bc85c0 (pid 4717)
        ino 35135903, on dev twed0s1f (232, 7)
0xc6ebb9b4: tag ufs, type VREG
    usecount 1, writecount 0, refcount 1 mountedhere 0
    flags (VV_OBJBUF)
     lock type ufs: EXCL (count 1) by thread 0xc9bc8cf0 (pid 4700)
        ino 16275165, on dev twed0s1f (232, 7)
0xc79f8564: tag ufs, type VREG
    usecount 1, writecount 0, refcount 1 mountedhere 0
    flags (VV_OBJBUF)
     lock type ufs: EXCL (count 1) by thread 0xc3c78170 (pid 5835)
        ino 17405819, on dev twed0s1f (232, 7)
0xc5d3a8a0: tag ufs, type VNON
    usecount 1, writecount 0, refcount 0 mountedhere 0

     lock type ufs: EXCL (count 1) by thread 0xc3cdc170 (pid 5840)
        ino 14146443, on dev twed0s1f (232, 7)
0xc39c1cf0: tag nfs, type VDIR
    usecount 3, writecount 0, refcount 1 mountedhere 0
    flags (VV_ROOT)
     lock type nfs: EXCL (count 1) by thread 0xc3a99170 (pid 22402) with 1 pending
        fileid 2 fsid 0x100ff01

After the first cvs update froze, I started a tcpdump to see if any
traffic was being sent to repoman, but it did not show anything.

Kris