5.2.1 not able to boot and panics sometimes with rpcbind_flags="-l"

Hi,

if I set rpcbind_flags="-l" in my rc.conf the machine boots only until
the start of mountd. Then there is a massive worload off the HDD and
after a lite time the console ist spammed with the following message:
"kirk kernel: kern.maxfiles limit exceeded by uid 0, please see
tuning(7)."

I tried to raise kern.maxfiles in single user mode without success. At
19920 mountd and nfsd were able to start, but then i got a panic. See
below for the backtrace.
With kern.maxfiles=10000 I reached another limit. It was something like 
"maxprocs exceeded, please see tuning(7)."

I got another panic as I booted in safe mode. The backtrace is nearly
identical to the form the other panic.

The System is 5.2.1-RELEASE-p9.

Excerpt from my rc.conf:
nfs_server_enable="YES"
nis_server_enable="YES"
rpcbind_enable="YES"
#rpcbind_flags="-l"
rpc_lockd_enable="YES"
rpc_statd_enable="YES"
nisdomainname="hochpass"
nfs_reserved_port_only="NO"
portmap_enable="YES"

And finally the backtrace:
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This GDB was configured as "i386-unknown-freebsd"...
panic: page fault
panic messages:
---
Fatal trap 12: page fault while in kernel mode
fault virtual address	= 0x40
fault code		= supervisor read, page not present
instruction pointer	= 0x8:0xc04bc108
stack pointer	        = 0x10:0xce32dbb8
frame pointer	        = 0x10:0xce32dbc0
code segment		= base 0x0, limit 0xfffff, type 0x1b
			= DPL 0, pres 1, def32 1, gran 1
processor eflags	= interrupt enabled, resume, IOPL = 0
current process		= 965 (rpcbind)
trap number		= 12
panic: page fault

syncing disks, buffers remaining... 562 562 562 562 562 562 562 562 562
562 562 562 562 562 562 ad0: WARNING - WRITE_MUL interrupt was seen but
timeout fired LBA=559359
562 562 562 562 562 
giving up on 540 buffers
Uptime: 1m18s
ad0: WARNING - WRITE_MUL interrupt was seen but timeout fired LBA=559359
Dumping 128 MB
 16 32 48 64 80 96 112
---
#0  doadump () at /usr/src/sys/kern/kern_shutdown.c:240
240		dumping++;
(kgdb) list *0xc04bc108
0xc04bc108 is in devtoname (/usr/src/sys/kern/kern_conf.c:486).
481	devtoname(dev_t dev)
482	{
483		char *p;
484		int mynor;
485	
486		if (dev->si_name[0] == '#' || dev->si_name[0] == '\0') {
487			p = dev->si_name;
488			if (devsw(dev))
489				sprintf(p, "#%s/", devsw(dev)->d_name);
490			else
(kgdb) backtrace 
#0  doadump () at /usr/src/sys/kern/kern_shutdown.c:240
#1  0xc04db510 in boot (howto=256) at
/usr/src/sys/kern/kern_shutdown.c:372
#2  0xc04db845 in panic () at /usr/src/sys/kern/kern_shutdown.c:550
#3  0xc061c431 in trap_fatal (frame=0xce32db78, eva=64) at
/usr/src/sys/i386/i386/trap.c:821
#4  0xc061c18b in trap_pfault (frame=0xce32db78, usermode=0, eva=64) at
/usr/src/sys/i386/i386/trap.c:735
#5  0xc061bdc4 in trap (frame=
      {tf_fs = 24, tf_es = 16, tf_ds = 16, tf_edi = 0, tf_esi = 0,
tf_ebp = -835527744, tf_isp = -835527772, tf_ebx = 2, tf_edx =
-1035988032, tf_ecx = -1002449072, tf_eax = 35, tf_trapno = 12, tf_err =
0, tf_eip = -1068777208, tf_cs = 8, tf_eflags = 66050, tf_esp = 2, tf_ss
= -1059906520}) at /usr/src/sys/i386/i386/trap.c:420
#6  0xc060c9d8 in calltrap () at {standard input}:94
#7  0xc05d3fea in swap_pager_getpages (object=0xc1d48ef4, m=0xce32dc94,
count=2, reqpage=0) at /usr/src/sys/vm/swap_pager.c:1144
#8  0xc05d7035 in vm_fault (map=0xc2410938, vaddr=134619136,
fault_type=2 '\002', fault_flags=8)
    at /usr/src/sys/vm/vm_pager.h:129
#9  0xc061c0b7 in trap_pfault (frame=0xce32dd48, usermode=1,
eva=134619136) at /usr/src/sys/i386/i386/trap.c:711
#10 0xc061bcd7 in trap (frame=
      {tf_fs = 47, tf_es = 47, tf_ds = 47, tf_edi = 134619136, tf_esi =
1200, tf_ebp = -1077952776, tf_isp = -835527308, tf_ebx = 1200, tf_edx =
0, tf_ecx = 300, tf_eax = 0, tf_trapno = 12, tf_err = 6, tf_eip =
672387291, tf_cs = 31, tf_eflags = 66066, tf_esp = -1077952832, tf_ss =
47}) at /usr/src/sys/i386/i386/trap.c:319
#11 0xc060c9d8 in calltrap () at {standard input}:94
---Can't read userspace from dump, or kernel process---

(kgdb) quit


tschau,
Hilko