Linux with MMU hangs at 'RPC'

Built with the '20100621' . The board is DE2. 'make' is successful, and I've got the images.

After 'nios2-termina', it goes:

Linux version 2.6.35-00743-ge3b9b64-dirty (root@ubuntu) (gcc version 4.1.2)# 10 Wed Feb 2 17:18:05 CST 2011

bootconsole [early0] enabled

early_console initialized at 0xe1801230

Linux/Nios II-MMU

init_bootmem_node(?,0xd36, 0x800, 0x1000)

free_bootmem(0xd36000, 0x2ca000)

reserve_bootmem(0xd36000, 0x100)

Built 1 zonelists in Zone order, mobility grouping off. Total pages: 2032

Kernel command line:

PID hash table entries: 32 (order: -5, 128 bytes)

Dentry cache hash table entries: 1024 (order: 0, 4096 bytes)

Inode-cache hash table entries: 1024 (order: 0, 4096 bytes)

We have 4096 pages of RAM

Memory available: 2772k/5335k RAM, 0k/0k ROM (2010k kernel code, 3324k data)

Hierarchical RCU implementation.

RCU-based detection of stalled CPUs is disabled.

Verbose stalled-CPUs detection is disabled.

NR_IRQS:32

Calibrating delay loop... 20.94 BogoMIPS (lpj=104704)

pid_max: default: 32768 minimum: 301

Mount-cache hash table entries: 512

NET: Registered protocol family 16

init_BSP(): registering device resources

bio: create slab <bio-0> at 0

Switching to clocksource timer

NET: Registered protocol family 2

IP route cache hash table entries: 1024 (order: 0, 4096 bytes)

TCP established hash table entries: 512 (order: 0, 4096 bytes)

TCP bind hash table entries: 512 (order: -1, 2048 bytes)

TCP: Hash tables configured (established 512 bind 512)

TCP reno registered

UDP hash table entries: 256 (order: 0, 4096 bytes)

UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)

NET: Registered protocol family 1

RPC: Registered udp transport module.

RPC: Registered tcp transport module.

RPC: Registered tcp NFSv4.1 backchannel transport module.

(Forever hangs here)

Being newbie to uClinux, dunno what to do.. Any ideas? Thank you!