Hi
After 3,14 gnome shell update (i use debian jessie) i have see synaptic p.m, very slow to show the package list at startup and also when i change the package list (i.e "all" to "removable" even with a short package list).
If i stop Caribou Synaptic work very good
I have also noted this :
1) Caribou start even if disabled (i don't use it).