I'm experiencing the exact same problem as demonstrated in the Ubuntu bug report. This is because I'm using a newer gtk than stable (2.18.6). There is a patch inside the bugreport that fixes this issue. Please apply this patch to make a gtk+ bump go smooth. Ronald Reproducible: Always Steps to Reproduce: 1. Open mousepad 2. Find something with ctrl+f 3. Find something again with ctrl+f Actual Results: Search button greyed out. Expected Results: Search button active.
Btw, I have just confirmed that the patch works :)
+*mousepad-0.2.16-r1 (19 Feb 2010) + + 19 Feb 2010; Samuli Suominen <ssuominen@gentoo.org> + +mousepad-0.2.16-r1.ebuild, + +files/mousepad-0.2.16-fix-first-replace.patch, + +files/mousepad-0.2.16-resensitize-find-button.patch: + Apply Debian 00_resensitize-find-button.patch and + 01_fix-first-replace.patch wrt #302020 to restore Find and Replace + functionality.