Some issues on pi

[kuno]

I just finished installation of arch on my new pi several days.

The system is mostly ok, some some software is not works properly. Including

mongodb

When I type "mongo" in terminal, I'll get such error
$this->bbcode_second_pass_code('', 'mongo: error while loading shared libraries: libboost_system.so.1.50.0: cannot open shared object file: No such file or directory
')

go

It is even worse, it seems there are some hardware problem? But I am not sure
$this->bbcode_second_pass_code('', '
SIGILL: illegal instruction
PC=0x7d804

math.init·1()
/usr/lib/go/src/pkg/math/pow10.go:34 +0x28
math.init()
/usr/lib/go/src/pkg/math/unsafe.go:21 +0x70
strconv.init()
/usr/lib/go/src/pkg/strconv/quote.go:441 +0x70
go/parser.init()
/usr/lib/go/src/pkg/go/parser/parser.go:2349 +0x78
main.init()
/usr/lib/go/src/cmd/go/vet.go:37 +0x78

goroutine 2 [runnable]:
created by runtime.main
/usr/lib/go/src/pkg/runtime/proc.c:221

trap 0x6
error 0x0
oldmask 0x0
r0 0x86d718
r1 0x0
r2 0x0
r3 0x0
r4 0x0
r5 0x0
r6 0x0
r7 0x0
r8 0x1094d7fc
r9 0x45f404
r10 0x10953000
fp 0x86d2da
ip 0x1094d7f9
sp 0xb6ef1e4c
lr 0x7dd98
pc 0x7d804
cpsr 0x20000010
fault 0x0
')

Anyone can help me figure those out? thanks.