Cisco 3661 router hanging problem .evev though console is not available needs to hard reboot.
Cisco Internetwork Operating System Software
IOS (tm) 3600 Software (C3660-IO3-M), Version 12.3(26), RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2008 by cisco Systems, Inc.
Compiled Mon 17-Mar-08 16:55 by dchih
ROM: System Bootstrap, Version 12.0(6r)T, RELEASE SOFTWARE (fc1)
COS-DADAR-3661 uptime is 1 minute
System returned to ROM by bus error at PC 0x6955210C, address 0x0
System image file is "flash:c3660-io3-mz.123-26.bin"
cisco 3660 (R527x) processor (revision 1.0) with 46080K/19456K bytes of memory.
Processor board ID JAB042387EB
R527x CPU at 225MHz, Implementation 40, Rev 10.0, 2048KB L2 Cache
Channelized E1, Version 1.0.
X.25 software, Version 3.0.0.
Primary Rate ISDN software, Version 1.1.
3660 Chassis type: ENTERPRISE
1 FastEthernet/IEEE 802.3 interface(s)
65 Serial network interface(s)
2 Channelized E1/PRI port(s)
DRAM configuration is 64 bits wide with parity disabled.
125K bytes of non-volatile configuration memory.
16384K bytes of processor board System flash (Read/Write)
Configuration register is 0x2102