diff --git a/debug/debug.go b/debug/debug.go
deleted file mode 100644
index e214bc9..0000000
--- a/debug/debug.go
+++ /dev/null
@@ -1,12 +0,0 @@
-package debug
-
-import (
-	"fmt"
-	"os"
-)
-
-func Log(format string, a ...interface{}) {
-	if _, ok := os.LookupEnv("VERMIN_DEBUG"); ok {
-		fmt.Printf(format+"\n", a...)
-	}
-}
diff --git a/images/vagrant/archive_utils.go b/images/vagrant/archive_utils.go
index f84f784..7bc11d6 100644
--- a/images/vagrant/archive_utils.go
+++ b/images/vagrant/archive_utils.go
@@ -39,14 +39,19 @@ func tarFiles(w io.Writer, base string, files []os.FileInfo) error {
 	return nil
 }
 
-func gunzip(baseDir string, gzipStream io.Reader) error {
+func gunzip(gzipStream io.Reader, baseDir string, tarOnly bool) error {
 
-	uncompressedStream, err := gzip.NewReader(gzipStream)
-	if err != nil {
-		return errImageIsNotGzipped
-	}
+	var tarReader *tar.Reader
 
-	tarReader := tar.NewReader(uncompressedStream)
+	if tarOnly {
+		tarReader = tar.NewReader(gzipStream)
+	} else {
+		uncompressedStream, err := gzip.NewReader(gzipStream)
+		if err != nil {
+			return errImageIsNotGzipped
+		}
+		tarReader = tar.NewReader(uncompressedStream)
+	}
 
 	for true {
 		header, err := tarReader.Next()
diff --git a/images/vagrant/process_image.go b/images/vagrant/process_image.go
index b4078e0..e2aada2 100644
--- a/images/vagrant/process_image.go
+++ b/images/vagrant/process_image.go
@@ -2,6 +2,7 @@ package vagrant
 
 import (
 	"errors"
+	"github.com/mhewedy/vermin/log"
 	"github.com/mhewedy/vermin/progress"
 	"io/ioutil"
 	"os"
@@ -24,11 +25,15 @@ func ProcessImage(imagePath string) error {
 
 	imageDir := path.Dir(imagePath)
 
-	if err := gunzipVagrantBox(imagePath, imageDir); err != nil {
-		if err == errImageIsNotGzipped {
-			return nil
+	if err := gunzipVagrantBox(imagePath, imageDir, false); err != nil {
+		if err != errImageIsNotGzipped {
+			return err
+		}
+
+		log.Info("cannot ungzip image %s, try untaring only...", imagePath)
+		if err = gunzipVagrantBox(imagePath, imageDir, true); err != nil {
+			return err
 		}
-		return err
 	}
 
 	// remove the downloaded file
@@ -54,7 +59,7 @@ func ProcessImage(imagePath string) error {
 	})
 }
 
-func gunzipVagrantBox(imagePath, imageDir string) error {
+func gunzipVagrantBox(imagePath, imageDir string, tarOnly bool) error {
 
 	gzipFile, err := os.Open(imagePath)
 	if err != nil {
@@ -62,7 +67,7 @@ func gunzipVagrantBox(imagePath, imageDir string) error {
 	}
 	defer gzipFile.Close()
 
-	return gunzip(imageDir, gzipFile)
+	return gunzip(gzipFile, imageDir, tarOnly)
 }
 
 func createOVAFile(imagePath, imageDir string) error {
diff --git a/ip/ip.go b/ip/ip.go
index ae5f511..d9f4d4f 100644
--- a/ip/ip.go
+++ b/ip/ip.go
@@ -2,8 +2,8 @@ package ip
 
 import (
 	"fmt"
-	"github.com/mhewedy/vermin/debug"
 	"github.com/mhewedy/vermin/hypervisor"
+	"github.com/mhewedy/vermin/log"
 	"strings"
 )
 
@@ -24,12 +24,11 @@ func Find(vmName string, purge bool) (string, error) {
 		return "", err
 	}
 
-	debug.Log("found mac: %s for vm: %s", mac, vmName)
-
+	log.Debug("found mac: %s for vm: %s", mac, vmName)
 	var pong bool
 
 	if purge {
-		debug.Log("purge=1, purging...")
+		log.Debug("purge=1, purging...")
 		if err := ping(); err != nil {
 			return "", err
 		}
@@ -38,8 +37,7 @@ func Find(vmName string, purge bool) (string, error) {
 
 	for {
 		arp, err := getArpTable()
-
-		debug.Log("here's the arp table: %s ", arp)
+		log.Debug("here's the arp table: %s ", arp)
 
 		if err != nil {
 			return "", err
diff --git a/ip/ping.go b/ip/ping.go
index 4efe172..eadca2c 100644
--- a/ip/ping.go
+++ b/ip/ping.go
@@ -2,9 +2,9 @@ package ip
 
 import (
 	"github.com/mhewedy/vermin/cmd"
-	"github.com/mhewedy/vermin/debug"
 	"github.com/mhewedy/vermin/hypervisor"
 	"github.com/mhewedy/vermin/hypervisor/base"
+	"github.com/mhewedy/vermin/log"
 	"sync"
 )
 
@@ -14,7 +14,7 @@ func ping() error {
 	if err != nil {
 		return err
 	}
-	debug.Log("subnet: %v", subnet)
+	log.Debug("subnet: %v", subnet)
 
 	var wg sync.WaitGroup
 	wg.Add(subnet.Len)
diff --git a/log/log.go b/log/log.go
new file mode 100644
index 0000000..9c1971d
--- /dev/null
+++ b/log/log.go
@@ -0,0 +1,28 @@
+package log
+
+import (
+	"fmt"
+	"github.com/mhewedy/vermin/db"
+	"os"
+	"path/filepath"
+	"time"
+)
+
+func Debug(format string, a ...interface{}) {
+	if _, ok := os.LookupEnv("VERMIN_DEBUG"); ok {
+		Info(format, a)
+	}
+}
+
+func Info(format string, a ...interface{}) {
+	year, month, _ := time.Now().Date()
+	logFilePath := filepath.Join(db.BaseDir, fmt.Sprintf("log_%d-%d.log", year, month))
+
+	f, err := os.OpenFile(logFilePath, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
+	if err != nil {
+		return
+	}
+	defer f.Close()
+
+	_, _ = f.WriteString(fmt.Sprintf(format+"\n", a...))
+}