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System returned to ROM by processor memory parity error at PC 0x61885800,



I have a router rebooted and  show version shows its parity error.Is this software or hardware bug


sh ver
Cisco IOS Software, 3800 Software (C3845-SPSERVICESK9-M), Version 12.4(24)T8, RELEASE SOFTWARE (fc1)
Technical Support:
Copyright (c) 1986-2012 by Cisco Systems, Inc.
Compiled Sun 09-Sep-12 05:58 by prod_rel_team

ROM: System Bootstrap, Version 12.3(11r)T2, RELEASE SOFTWARE (fc1)

AE_DXB_DIF_T1_VG_L04_02 uptime is 1 week, 6 days, 18 hours, 57 minutes
System returned to ROM by processor memory parity error at PC 0x61885800, address 0x0 at 14:31:09 UTC Thu Jun 5 2014
System restarted at 14:33:30 UTC Thu Jun 5 2014
System image file is "flash:c3845-spservicesk9-mz.124-24.T8.bin"

This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.
A summary of U.S. laws governing Cisco cryptographic products may be found at:

If you require further assistance please contact us by sending email to

Cisco 3845 (revision 1.0) with 216064K/46080K bytes of memory.
Processor board ID FHK1039F1DP
2 Gigabit Ethernet interfaces
124 Serial interfaces
7 Channelized/Clear E1/PRI ports
8 Voice FXO interfaces
DRAM configuration is 64 bits wide with parity enabled.
479K bytes of NVRAM.
62720K bytes of ATA System CompactFlash (Read/Write)

Configuration register is 0x2102

Hall of Fame Super Gold

Could be an IOS bug.   Try

Could be an IOS bug.  


Try upgrading the IOS to a more stable "M" train.