diff --git a/src/components/screen.c b/src/components/screen.c
index c0ef794..b6512d3 100644
--- a/src/components/screen.c
+++ b/src/components/screen.c
@@ -2,6 +2,7 @@
 
 nn_screen *nn_newScreen(nn_Context *context, int maxWidth, int maxHeight, int maxDepth, int editableColors, int paletteColors) {
     nn_Alloc *alloc = &context->allocator;
+	// TODO: handle OOMs
     nn_screen *screen = nn_alloc(alloc, sizeof(nn_screen));
     screen->ctx = *context;
     screen->buffer = nn_alloc(alloc, sizeof(nn_scrchr_t) * maxWidth * maxHeight);
@@ -65,6 +66,20 @@ void nn_setResolution(nn_screen *screen, int width, int height) {
     screen->height = height;
 }
 
+nn_bool_t nn_unsafeReallocateScreenBuffer(nn_screen *screen, int maxWidth, int maxHeight) {
+	nn_Alloc *alloc = &screen->ctx.allocator;
+
+	nn_scrchr_t *newBuffer = nn_alloc(alloc, sizeof(nn_scrchr_t) * maxWidth * maxHeight);
+	if(newBuffer == NULL) {
+		return false;
+	}
+
+	screen->buffer = newBuffer;
+	screen->maxWidth = maxWidth;
+	screen->maxHeight = maxHeight;
+	return true;
+}
+
 void nn_getViewport(nn_screen *screen, int *width, int *height) {
     *width = screen->viewportWidth;
     *height = screen->viewportHeight;
diff --git a/src/components/volatileFilesystem.c b/src/components/volatileFilesystem.c
index 5059d0d..399cf86 100644
--- a/src/components/volatileFilesystem.c
+++ b/src/components/volatileFilesystem.c
@@ -111,7 +111,7 @@ nn_size_t nn_vf_spaceUsedByNode(nn_vfnode *node) {
     if(node->isDirectory) {
         nn_size_t sum = 0;
         for(nn_size_t i = 0; i < node->len; i++) {
-            sum = nn_vf_spaceUsedByNode(node->entries[i]);
+            sum += nn_vf_spaceUsedByNode(node->entries[i]);
         }
         return sum;
     } else {
diff --git a/src/neonucleus.h b/src/neonucleus.h
index d0585d1..8bcad17 100644
--- a/src/neonucleus.h
+++ b/src/neonucleus.h
@@ -914,6 +914,9 @@ void nn_unlockScreen(nn_screen *screen);
 void nn_getResolution(nn_screen *screen, int *width, int *height);
 void nn_maxResolution(nn_screen *screen, int *width, int *height);
 void nn_setResolution(nn_screen *screen, int width, int height);
+// changes the maximum resolution
+// DOES NOT USE THE LOCK AND THUS MAY CAUSE RACE CONDITIONS AND SEGFAULTS!!!!!
+nn_bool_t nn_unsafeReallocateScreenBuffer(nn_screen *screen, int maxWidth, int maxHeight);
 
 void nn_getViewport(nn_screen *screen, int *width, int *height);
 void nn_setViewport(nn_screen *screen, int width, int height);
diff --git a/src/sandbox.lua b/src/sandbox.lua
index fdd18e5..d5b3d7f 100644
--- a/src/sandbox.lua
+++ b/src/sandbox.lua
@@ -228,6 +228,7 @@ local libcomputer = {
         local deadline = computer.uptime() + (type(timeout) == "number" and timeout or math.huge)
 
         repeat
+			print("waiting for signal", computer.uptime())
             yield() -- give executor a chance to give us stuff
             local s = table.pack(computer.popSignal())
             if s.n > 0 then
@@ -437,7 +438,6 @@ local lastGC = computer.uptime()
 while true do
     timeout = nextDeadline()
     bubbleYield = false
-    collectgarbage()
 
     if computer.uptime() - lastGC >= gcInterval then
         collectgarbage("collect")
diff --git a/src/testLuaArch.c b/src/testLuaArch.c
index 993405b..420efbc 100644
--- a/src/testLuaArch.c
+++ b/src/testLuaArch.c
@@ -69,7 +69,7 @@ void *testLuaArch_alloc(testLuaArch *arch, void *ptr, size_t osize, size_t nsize
     nn_Alloc *alloc = nn_getAllocator(nn_getUniverse(arch->computer));
     if(nsize == 0) {
         arch->memoryUsed -= osize;
-        free(ptr);
+        nn_dealloc(alloc, ptr, osize);
         return NULL;
     } else {
         size_t actualOldSize = osize;
@@ -79,7 +79,7 @@ void *testLuaArch_alloc(testLuaArch *arch, void *ptr, size_t osize, size_t nsize
         }
         arch->memoryUsed -= actualOldSize;
         arch->memoryUsed += nsize;
-        return realloc(ptr, nsize);
+        return nn_resize(alloc, ptr, actualOldSize, nsize);
     }
 }