Add notes.
diff --git a/dist/pkg/bin24 b/dist/pkg/bin24
index ed25416..9a2ae08 100644
--- a/dist/pkg/bin24
+++ b/dist/pkg/bin24
@@ -11,6 +11,11 @@
conflicts=plan9port-bin26
desc='Plan 9 from User Space - binaries
This package contains binaries for Plan 9 from User Space.
- XXX Linux note here XXX
+ Due to incompatibilities between the Linux 2.6+ thread library
+ (NPTL) and the pre-2.6 Linux thread library (linuxthreads),
+ different binaries must be used on the pre-2.6 systems than
+ on 2.6 and later systems.
+ .
+ This package contains binaries for Linux 2.6 and later kernels.
'
grepfor=bin
diff --git a/dist/pkg/bin26 b/dist/pkg/bin26
index fa27973..423dd4e 100644
--- a/dist/pkg/bin26
+++ b/dist/pkg/bin26
@@ -11,6 +11,11 @@
conflicts=plan9port-bin24
desc='Plan 9 from User Space - binaries
This package contains binaries for Plan 9 from User Space.
- XXX Linux note here XXX
+ Due to incompatibilities between the Linux 2.6+ thread library
+ (NPTL) and the pre-2.6 Linux thread library (linuxthreads),
+ different binaries must be used on the pre-2.6 systems than
+ on 2.6 and later systems.
+ .
+ This package contains binaries for Linux 2.4 and earlier kernels.
'
grepfor=bin
