Lars Rune Nøstdal <larsnostdal <at> gmail.com> writes:
This seems to happen whenever Slime wants to show something in the status-buffer (minibuffer?), like argument-lists.
Correction; it pops up when I press tab to tab-complete something. It also pops up after compiling something - I guess when Slime wants to tell me how many warnings and errors there are.