diff --git a/unit10_services/lecture/unit09_host_services.key b/unit10_services/lecture/unit09_host_services.key
deleted file mode 100755
index f08631b..0000000
Binary files a/unit10_services/lecture/unit09_host_services.key and /dev/null differ
diff --git a/unit10_services/lecture/unit09_host_services2.pptx b/unit10_services/lecture/unit09_host_services2.pptx
index dcdad40..cbee481 100644
Binary files a/unit10_services/lecture/unit09_host_services2.pptx and b/unit10_services/lecture/unit09_host_services2.pptx differ
diff --git a/unit10_services/lecture/~$unit09_host_services2.pptx b/unit10_services/lecture/~$unit09_host_services2.pptx
new file mode 100644
index 0000000..b71c76f
Binary files /dev/null and b/unit10_services/lecture/~$unit09_host_services2.pptx differ