diff --git a/copyparty/__main__.py b/copyparty/__main__.py
index ec051f6d..13f07d99 100644
--- a/copyparty/__main__.py
+++ b/copyparty/__main__.py
@@ -118,12 +118,13 @@ class BasicDodge11874(
 
 
 def lprint(*a: Any, **ka: Any) -> None:
-    txt: str = " ".join(unicode(x) for x in a) + ka.get("end", "\n")
+    eol = ka.pop("end", "\n")
+    txt: str = " ".join(unicode(x) for x in a) + eol
     printed.append(txt)
     if not VT100:
         txt = ansi_re.sub("", txt)
 
-    print(txt, **ka)
+    print(txt, end="", **ka)
 
 
 def warn(msg: str) -> None:
@@ -138,7 +139,7 @@ def ensure_locale() -> None:
     ]:
         try:
             locale.setlocale(locale.LC_ALL, x)
-            lprint("Locale:", x)
+            lprint("Locale: {}\n".format(x))
             break
         except:
             continue
diff --git a/copyparty/authsrv.py b/copyparty/authsrv.py
index 6c4ff433..8b7508ee 100644
--- a/copyparty/authsrv.py
+++ b/copyparty/authsrv.py
@@ -17,6 +17,7 @@ from .bos import bos
 from .util import (
     IMPLICATIONS,
     META_NOBOTS,
+    SQLITE_VER,
     Pebkac,
     absreal,
     fsenc,
@@ -1165,7 +1166,7 @@ class AuthSrv(object):
 
         vfs.bubble_flags()
 
-        e2vs = []
+        have_e2d = False
         t = "volumes and permissions:\n"
         for zv in vfs.all_vols.values():
             if not self.warn_anonwrite:
@@ -1184,24 +1185,27 @@ class AuthSrv(object):
                 u = u if u else "\033[36m--none--\033[0m"
                 t += "\n|  {}:  {}".format(txt, u)
 
-            if "e2v" in zv.flags:
-                e2vs.append(zv.vpath or "/")
+            if "e2d" in zv.flags:
+                have_e2d = True
 
             t += "\n"
 
-        if e2vs:
-            t += "\n\033[33me2v enabled for the following volumes;\nuploads will be blocked until scan has finished:\n  \033[0m"
-            t += "  ".join(e2vs) + "\n"
+        if self.warn_anonwrite:
+            if not self.args.no_voldump:
+                self.log(t)
 
-        if self.warn_anonwrite and not self.args.no_voldump:
-            self.log(t)
+            if have_e2d:
+                t = self.chk_sqlite_threadsafe()
+                if t:
+                    self.log("\n\033[{}\033[0m\n".format(t))
 
         try:
             zv, _ = vfs.get("/", "*", False, True)
             if self.warn_anonwrite and os.getcwd() == zv.realpath:
-                self.warn_anonwrite = False
                 t = "anyone can write to the current directory: {}\n"
                 self.log(t.format(zv.realpath), c=1)
+
+            self.warn_anonwrite = False
         except Pebkac:
             self.warn_anonwrite = True
 
@@ -1215,6 +1219,23 @@ class AuthSrv(object):
             if pwds:
                 self.re_pwd = re.compile("=(" + "|".join(pwds) + ")([]&; ]|$)")
 
+    def chk_sqlite_threadsafe(self) -> str:
+        v = SQLITE_VER[-1:]
+
+        if v == "1":
+            # threadsafe (linux, windows)
+            return ""
+
+        if v == "2":
+            # module safe, connections unsafe (macos)
+            return "33m  your sqlite3 was compiled with reduced thread-safety;\n   database features (-e2d, -e2t) SHOULD be fine\n    but MAY cause database-corruption and crashes"
+
+        if v == "0":
+            # everything unsafe
+            return "31m  your sqlite3 was compiled WITHOUT thread-safety!\n   database features (-e2d, -e2t) will PROBABLY cause crashes!"
+
+        return "36m  cannot verify sqlite3 thread-safety; strange but probably fine"
+
     def dbg_ls(self) -> None:
         users = self.args.ls
         vol = "*"
diff --git a/copyparty/svchub.py b/copyparty/svchub.py
index 88e56df5..a70284f3 100644
--- a/copyparty/svchub.py
+++ b/copyparty/svchub.py
@@ -146,8 +146,8 @@ class SvcHub(object):
         self.args.th_dec = list(decs.keys())
         self.thumbsrv = None
         if not args.no_thumb:
-            t = "decoder preference: {}".format(", ".join(self.args.th_dec))
-            self.log("thumb", t)
+            t = ", ".join(self.args.th_dec) or "(None available)"
+            self.log("thumb", "decoder preference: {}".format(t))
 
             if "pil" in self.args.th_dec and not HAVE_WEBP:
                 msg = "disabling webp thumbnails because either libwebp is not available or your Pillow is too old"
diff --git a/copyparty/util.py b/copyparty/util.py
index 24c20639..61352359 100644
--- a/copyparty/util.py
+++ b/copyparty/util.py
@@ -235,8 +235,26 @@ def py_desc() -> str:
     )
 
 
+def _sqlite_ver() -> str:
+    try:
+        co = sqlite3.connect(":memory:")
+        cur = co.cursor()
+        try:
+            vs = cur.execute("select * from pragma_compile_options").fetchall()
+        except:
+            vs = cur.execute("pragma compile_options").fetchall()
+
+        v = next(x[0].split("=")[1] for x in vs if x[0].startswith("THREADSAFE="))
+        cur.close()
+        co.close()
+    except:
+        v = "W"
+
+    return "{}*{}".format(sqlite3.sqlite_version, v)
+
+
 try:
-    from sqlite3 import sqlite_version as SQLITE_VER
+    SQLITE_VER = _sqlite_ver()
 except:
     SQLITE_VER = "(None)"