[Plugin: WP Super Cache] Compression Fails Randomly, Serving Garbage

Picking this up from a “me too” post earlier. I was hoping this was a general issue where someone would say “you need to flip switch x and magic will happen.” Sadly it looks like this issue is less clear than that. I normally have compression enabled in Wp Super Cache. Recently (last month or so) I’ve started to get pages showing up like this:

“KȢf0B����Y�2[[faᑙ�ݭ
J>
�ÌG͞?�����P��7+20��� ľ�:�(� !
��� �3O�v���L��x���f�
f�Ǚ���X�U�R��2���q�Í��t�� |g��X�/ “

Turning off compression fixes it. I really want to turn compression back on, so I’d love to resolve this.

Any idea what might be going on?

I upgrade dutifully, so I’m latest and greatest with both WP and the plugin.