hey there,
i just realized that the simplesearch-widget has a small white border around it when using the murrine engine.
it's a bit weird, but with other engines (aurora, pixmap) there's no such problem.

(screenshot attached to explain what i mean, comparison between gmb's simplesearch and thunar's location-dialog)

so is that a bug in murrine?
(using version 0.90.3+git20100323-0ubuntu1-karmic1)

It can't seem to see it with my versions, but it's possible that it's coming from gmusicbrowser as it doesn't use the standard entries with icon (it wasn't in gtk until gtk v2.16)
(btw there is a known display bug when moving the entry vertically by resizing the panel it's in)
I'll probably change it to use the standard gtk entry with icons at some point.

it's also possible that it's a regression in the murrine engine, since i'm using a version from git and it doesn't appear with other engines.
i'll try to test it with a stable version as soon as i get a chance...