This is a minor cosmetic bug. So it isn't a biggie.

Running LimeWire 3.9.6 beta, java 1.4.2_04, in SuSE Linux 9.0 (at 800x600). When you copy a magnet URI to the clipboard, then switch to LimeWire, LimeWire stretches the dialog box to the width of the full magnet URI. So what I see is a dialog box that is wider than my screen can fit.

One sample URI that causes this is this:
magnet:?xt=urn:sha1:GZLEHA3FR46YNHEU5AEFUTAM5HYEEE MF &dn=LimeWireLinux.bin &xs=http://<my-ip>:6346/uri-res/N2R ?urn:sha1:GZLEHA3FR46YNHEU5AEFUTAM5HYEEEMF
(intentionally broken up with spaces to prevent it from stretching the forum's width)