Security: rec'd packet not an ipsec packet !

I am just trying to ping the outside interface after i made a vpn connection on my PIX515E. Ping works before applying the crypto map, but after, if i enable logging, the packet dropped and this is logged by :
pixfirewall(config)# 402106: Rec'd packet not an IPSEC packet. (ip) dest_addr= xx.xxx.xxx.58, src_addr= xxx.xxx.xxx.59, prot= icmp

Here is my config:
**********************************************
PIX Version 6.3(1)
interface ethernet0 auto
interface ethernet1 auto
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password T/t63Bt/WwztM4UV encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
hostname pixfirewall
domain-name starcall.com.sa
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 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 1433
fixup protocol sqlnet 1521

access-list VPN permit ip host 10.1.2.118 host 10.1.1.15
access-list VPN permit ip 192.168.10.0 255.255.255.0 10.1.1.0 255.255.255.0
access-list laptop permit ip host 10.1.2.118 host 10.1.1.15
access-list inbound permit tcp any host 10.1.2.118 eq www
access-list acl_site permit ip 192.168.10.0 255.255.255.0 10.1.1.0 255.255.255.0

pager lines 24
logging on
logging console notifications
mtu outside 1500
mtu inside 1500
ip address outside xxx.xxx.xxx.58 255.255.255.248
ip address inside 192.168.10.1 255.255.255.0
ip audit info action alarm
ip audit attack action alarm
pdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 0 access-list VPN
nat (inside) 1 0.0.0.0 0.0.0.0 0 0
access-group inbound_ping in interface outside
route outside 0.0.0.0 0.0.0.0 xxx.xxx.xxx.57 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
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
crypto ipsec transform-set myts esp-des esp-md5-hmac
crypto map mymap 10 ipsec-isakmp
crypto map mymap 10 match address acl_site
crypto map mymap 10 set transform-set myts
crypto map mymap interface outside
isakmp enable outside
isakmp key ******** address xxx.xxx.xxx.42 netmask 255.255.255.255
isakmp identity address
isakmp policy 20 authentication pre-share
isakmp policy 20 encryption des
isakmp policy 20 hash md5
isakmp policy 20 group 2
isakmp policy 20 lifetime 86400
telnet timeout 5
ssh timeout 5
console timeout 0
terminal width 80
Cryptochecksum:92e3874b367d5c1f699625c9697f77c4
: end
**********************************************
What is strange is that access list for crypto-map seems fine, i can't see what happening. Any help please.

Thanks