I am experiencing an issue where I setup static IP's NATT'd internal servers to the outside world, however, a Lan2Lan IPSEC VPN is also connected to this router. When any interesting traffic comes down the VPN for an IP that's been statically assigned, they cannot reach it thus appearing as if it's offline.
Cisco 2851 IOS Router connected to another 1841 IOS router. I did not have this issue when using a PIX at the one end.
I have a route-map & proper ACL's in place to disseminate interesting traffic. Any IP other than the ones assigned STATICALLY by NAT are reachable.