1. 2011-10-01 [Bug 112239] Disallow placing facilities on slopes kde-bugs- Andreas Beckermann 2. 2008-11-20 [Bug 112239] Disallow placing facilities on slopes kde-bugs- Christophe Giboude 3. 2008-11-20 [Bug 112239] Disallow placing facilities on slopes kde-bugs- Christophe Giboude 4. 2005-09-08 [Bug 112239] Disallow placing facilities on slopes kde-bugs- Rivo Laks