[slime-devel] meta-. off by several lines on SLIME/ACL/Emacs/Windows, anyone seen this?

When I do meta-., it takes me there, but it's off by several lines, and at a random place in the middle of the line. I think it's consistently above the def. But not by the same amount of lines each time. And I'm in a random part of the line. Should be at the beginning, right? It's stable in a session: two repeated meta-.'s take me to the same place each time. Admittedly, I've not any home work on versions of SLIME/Emacs/ACL/Windows. Not asking for anyone to do any more than say if they recall anything like this. I use SBCL and CCL with the otherwise-same stack with no similar problems