Question : Only 1 host can get out to internet

So, I have a PIX running in my lab and only 1 host can get out.. Can't figure out why for the life of me. Can somebody sort through the show run and see if anything sticks out?

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dynalabpix# show run
: Saved
:
PIX Version 6.3(1)
interface ethernet0 auto
interface ethernet1 auto
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password XXXXXXXXXXXXX encrypted
passwd XXXXXXXXX encrypted
hostname dynalabpix
domain-name ciscopix.com
fixup protocol ftp 21
fixup protocol h323 h225 1720
fixup protocol h323 ras 1718-1719
fixup protocol http 80
fixup protocol ils 389
fixup protocol pptp 1723
fixup protocol rsh 514
fixup protocol rtsp 554
fixup protocol sip 5060
fixup protocol sip udp 5060
fixup protocol skinny 2000
fixup protocol smtp 25
fixup protocol sqlnet 1521
names
access-list acs1 permit icmp any any echo-reply
access-list acs1 permit tcp any host 12.105.226.251 eq 3389
access-list acs1 permit tcp any host 12.105.226.250 eq www
access-list acs1 permit tcp any host 12.105.226.250 eq citrix-ica
pager lines 24
logging on
logging buffered critical
mtu outside 1500
mtu inside 1500
ip address outside 12.105.226.250 255.255.255.224
ip address inside 172.16.50.1 255.255.255.0
ip audit info action alarm
ip audit attack action alarm
pdm location 12.105.226.249 255.255.255.255 outside
pdm location 12.16.50.0 255.255.255.0 inside
pdm location 172.16.12.0 255.255.254.0 inside
pdm location 172.16.50.2 255.255.255.255 inside
pdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 1 0.0.0.0 0.0.0.0 0 0
static (inside,outside) 12.105.226.251 172.16.50.2 netmask 255.255.255.255 0 0
static (inside,outside) 12.105.226.250 172.16.50.3 netmask 255.255.255.255 0 0
access-group acs1 in interface outside
rip inside passive version 1
route outside 0.0.0.0 0.0.0.0 12.105.226.225 1
timeout xlate 3:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 rpc 0:10:00 h225 1:00:00
timeout h323 0:05:00 mgcp 0:05:00 sip 0:30:00 sip_media 0:02:00
timeout uauth 0:05:00 absolute
aaa-server TACACS+ protocol tacacs+
aaa-server RADIUS protocol radius
aaa-server LOCAL protocol local
http server enable
http 172.16.12.0 255.255.254.0 inside
http 172.16.50.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
telnet 12.16.50.0 255.255.255.0 inside
telnet 172.16.50.0 255.255.255.0 inside
telnet timeout 30
ssh timeout 5
console timeout 0
terminal width 80
Cryptochecksum:56f68222036ee46664007f666fe99d0b
: end

Answer : Only 1 host can get out to internet

May be an illustration would help here;

So let's assume this;

Traffic from 172.16.50.2 goes out to internet and it gets translated to 12.105.226.250 because of your 'global (outside)...' statements. When the reply traffic comes back to the PIX, it gets translated back to 172.16.50.3 because of the static you have... So it is going to the wrong host and that is why you're able to have only one host work (that is 172.16.50.3). Hope that helps.

Cheers,
rsivanandan