hmmm well there are 4 pools
DefaultAppPool, .net2.0 pool and WR pool is set to recycle worker processes every 1740 minutes. No memory recycling.
Ditto for web resource pool (but that's not even started).
It seems that the sites are set to use the DefaultAppPool.
BTW while we're here in IIS what's the correct execute permissions? Some of them are "scripts only" while some are "scripts and executables".