My first niggle is beginning to become important

The MyDocuments icon is gradually disappearing behind the top panel (BTW, is the no way of repositioning icons on the desktop?) and at least two apps - xfw and medit - (with windows maximised) have their top bars jammed up under the top panel. This means that their windows can no longer be moved/iconised/maximised/restored/etc. Quite strange.

Has anyone any idea how to correct this problem? Thanks.
Edit: It's just occurred to me that, if I could edit the config (??) file which defines where a particular window sits on the desktop, I could move these windows away from the top panel. Is that reasonable?
