ipsec error

["openbsd-misc" <openbsd-misc_(_at_)_faruk_(_dot_)_net>]

Hi. 

I have setup ipsec with rc.vpn (no isakmp yet)script but I am having some 
difficulties. After running rc.vpn (of course editing required GW_LOCAL and 
GW_PEER parameters) it seems to work fine about a few minutes but after that 
time it hangs but I can still ping my peer which is also ipsec'ed but no 
other connection. But after flushing with ``ipsecadm flush'' everything 
works fine but again after a few minutes they hang again. 

I can provide more info if required 

PS: I am using default OpenBSD 3.2 install with default kernel. 

REGARDS