diff --git a/gaboshlib/g_calc.sh b/gaboshlib/g_calc.sh
index e421d9d..302fcaf 100644
--- a/gaboshlib/g_calc.sh
+++ b/gaboshlib/g_calc.sh
@@ -1,6 +1,5 @@
 function g_calc {
 
-
   # Use bc in backround for multiple bc's running much faster
   if [ -z "${g_bc_running}" ]
   then
@@ -12,31 +11,41 @@ function g_calc {
     [ -p ${g_tmp}/${g_rnd}/bc-sed-out ] || mkfifo ${g_tmp}/${g_rnd}/bc-sed-out
 
     # bc stream channel
-    bc -ql <${g_tmp}/${g_rnd}/bc-in >${g_tmp}/${g_rnd}/bc-out &
+    { bc -ql <${g_tmp}/${g_rnd}/bc-in 2>&1 >${g_tmp}/${g_rnd}/bc-out & } 2>/dev/null
     exec 3>${g_tmp}/${g_rnd}/bc-in 4<${g_tmp}/${g_rnd}/bc-out
 
     # sed stream channel
-    sed -su 's/^\./0./; s/^-\./-0./' <${g_tmp}/${g_rnd}/bc-sed-in >${g_tmp}/${g_rnd}/bc-sed-out &
+    { sed -su 's/^\./0./; s/^-\./-0./' <${g_tmp}/${g_rnd}/bc-sed-in >${g_tmp}/${g_rnd}/bc-sed-out & } 2>/dev/null
     exec 5>${g_tmp}/${g_rnd}/bc-sed-in 6<${g_tmp}/${g_rnd}/bc-sed-out
 
     g_bc_running="true"
-  fi 2>/dev/null
+  fi 
 
   # do bc
   echo "scale=8; $@" >&3
   local g_bc_out
-  if ! read -t 0 g_bc_out <&4
+  if ! read -t 0.1 g_bc_out <&4
   then
-    g_traceback
+    g_traceback "$@"
+    ( exec 3<&- ) 2>/dev/null
+    ( exec 4<&- ) 2>/dev/null
+    ( exec 5<&- ) 2>/dev/null
+    ( exec 6<&- ) 2>/dev/null
+    unset g_bc_running
     return 1
-  fi
+  fi 
 
   # do sed
   echo ${g_bc_out} >&5
   local g_sed_out
-  if ! read -t 0 g_sed_out <&6
+  if ! read -t 0.1 g_sed_out <&6
   then
-    g_traceback
+    g_traceback "$@"
+    ( exec 3<&- ) 2>/dev/null
+    ( exec 4<&- ) 2>/dev/null
+    ( exec 5<&- ) 2>/dev/null
+    ( exec 6<&- ) 2>/dev/null
+    unset g_bc_running
     return 1
   fi