it lookes like you missed the "|"
try something like this
(&(objectclass=organizationalPerson)(|(memberOf:1.2.840.113556.1.4.1941:=CN=jabb er_access,OU=Global_groups,DC=pup,DC=local))(!(userAccountControl:1.2.840.113556 .1.4.803:=2)))
the main group "jabber_access" should be a domain local group to allow for nested groups.