Index: contrib/scripts/install_prereq
===================================================================
--- contrib/scripts/install_prereq	(revision 418757)
+++ contrib/scripts/install_prereq	(working copy)
@@ -55,7 +55,8 @@
 		tocheck="${tocheck} ^${pack}$"
 	done
 	aptitude -F '%c %p' search ${tocheck} 2>/dev/null \
- 	| awk '/^p/{print $2}'
+		| awk '/^p/{print $2}' \
+		| grep -v ':i386$'
 }
 
 # parsing the output of yum is close to impossible.