Comment 52 for bug 66900

Problem started occurring for me when upgrading edgy server to latest kernel (2.6.17-12-server).
No errors before upgrade, even with 296 day uptime.

Within 1 day of uptime, here is the output:
dmesg | grep "APIC error on CPU0:"
[43019949.080000] APIC error on CPU0: 00(40)
[43020069.080000] APIC error on CPU0: 40(40)
[43036449.200000] APIC error on CPU0: 40(40)

Processor is AMD Athlon Barton 2500+
Here is /proc/cpuinfo

cat /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 6
model : 10
model name : AMD Athlon(tm) XP 2500+
stepping : 0
cpu MHz : 1837.524
cache size : 512 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse syscall mmxext 3dnowext 3dnow up ts
bogomips : 3678.35