only perform background cache refresh query if there is not some query already going on
only perform background cache refresh query if there is not some query already going on


git-svn-id: ced07d5e10f05f45759cb75bdadb6610d25656be@797 ac7a513c-5e3a-0410-af42-968c3ac6e7dc

harishnavnit/iris,psi-im/iris,orgads/iris,drizt/iris,orgads/iris,harishnavnit/iris,orgads/iris,drizt/iris,psi-im/iris,psi-im/iris,drizt/iris,harishnavnit/iris