diff --git a/indra/llimage/llimage.cpp b/indra/llimage/llimage.cpp
index c3f4878ee..d436e3280 100644
--- a/indra/llimage/llimage.cpp
+++ b/indra/llimage/llimage.cpp
@@ -1689,6 +1689,12 @@ static void avg4_colors2(const U8* a, const U8* b, const U8* c, const U8* d, U8*
 	dst[1] = (U8)(((U32)(a[1]) + b[1] + c[1] + d[1])>>2);
 }
 
+void LLImageBase::setDataAndSize(U8 *data, S32 size)
+{ 
+	ll_assert_aligned(data, 16);
+	mData = data; mDataSize = size; 
+}	
+
 //static
 void LLImageBase::generateMip(const U8* indata, U8* mipdata, S32 width, S32 height, S32 nchannels)
 {
diff --git a/indra/llimage/llimage.h b/indra/llimage/llimage.h
index 3782ff1cf..88fc0562e 100644
--- a/indra/llimage/llimage.h
+++ b/indra/llimage/llimage.h
@@ -134,7 +134,7 @@ public:
 
 protected:
 	// special accessor to allow direct setting of mData and mDataSize by LLImageFormatted
-	void setDataAndSize(U8 *data, S32 size) { mData = data; mDataSize = size; }
+	void setDataAndSize(U8 *data, S32 size);
 	
 public:
 	static void generateMip(const U8 *indata, U8* mipdata, int width, int height, S32 nchannels);
diff --git a/indra/llmath/llsimdtypes.inl b/indra/llmath/llsimdtypes.inl
index 712239e42..e905c8495 100644
--- a/indra/llmath/llsimdtypes.inl
+++ b/indra/llmath/llsimdtypes.inl
@@ -62,6 +62,7 @@ inline LLSimdScalar operator/(const LLSimdScalar& a, const LLSimdScalar& b)
 inline LLSimdScalar operator-(const LLSimdScalar& a)
 {
 	static LL_ALIGN_16(const U32 signMask[4]) = {0x80000000, 0x80000000, 0x80000000, 0x80000000 };
+	ll_assert_aligned(signMask,16);
 	return _mm_xor_ps(*reinterpret_cast<const LLQuad*>(signMask), a);
 }
 
@@ -146,6 +147,7 @@ inline LLSimdScalar& LLSimdScalar::operator/=(const LLSimdScalar& rhs)
 inline LLSimdScalar LLSimdScalar::getAbs() const
 {
 	static const LL_ALIGN_16(U32 F_ABS_MASK_4A[4]) = { 0x7FFFFFFF, 0x7FFFFFFF, 0x7FFFFFFF, 0x7FFFFFFF };
+	ll_assert_aligned(F_ABS_MASK_4A,16);
 	return _mm_and_ps( mQ, *reinterpret_cast<const LLQuad*>(F_ABS_MASK_4A));
 }
 
diff --git a/indra/llmath/llvolume.cpp b/indra/llmath/llvolume.cpp
index ebf049591..d090b8429 100644
--- a/indra/llmath/llvolume.cpp
+++ b/indra/llmath/llvolume.cpp
@@ -95,17 +95,6 @@ const S32 SCULPT_MIN_AREA_DETAIL = 1;
 
 extern BOOL gDebugGL;
 
-void assert_aligned(void* ptr, uintptr_t alignment)
-{
-#if 0
-	uintptr_t t = (uintptr_t) ptr;
-	if (t%alignment != 0)
-	{
-		llerrs << "Alignment check failed." << llendl;
-	}
-#endif
-}
-
 BOOL check_same_clock_dir( const LLVector3& pt1, const LLVector3& pt2, const LLVector3& pt3, const LLVector3& norm)
 {    
 	LLVector3 test = (pt2-pt1)%(pt3-pt2);
@@ -6967,14 +6956,14 @@ void LLVolumeFace::resizeVertices(S32 num_verts)
 	if (num_verts)
 	{
 		mPositions = (LLVector4a*) ll_aligned_malloc_16(sizeof(LLVector4a)*num_verts);
-		assert_aligned(mPositions, 16);
+		ll_assert_aligned(mPositions, 16);
 		mNormals = (LLVector4a*) ll_aligned_malloc_16(sizeof(LLVector4a)*num_verts);
-		assert_aligned(mNormals, 16);
+		ll_assert_aligned(mNormals, 16);
 
 		//pad texture coordinate block end to allow for QWORD reads
 		S32 size = ((num_verts*sizeof(LLVector2)) + 0xF) & ~0xF;
 		mTexCoords = (LLVector2*) ll_aligned_malloc_16(size);
-		assert_aligned(mTexCoords, 16);
+		ll_assert_aligned(mTexCoords, 16);
 	}
 	else
 	{
@@ -7062,7 +7051,8 @@ void LLVolumeFace::pushIndex(const U16& idx)
 	S32 old_size = ((mNumIndices*2)+0xF) & ~0xF;
 	if (new_size != old_size)
 	{
-		mIndices = (U16*) realloc(mIndices, new_size);
+		mIndices = (U16*) ll_aligned_realloc_16(mIndices, new_size, old_size);
+		ll_assert_aligned(mIndices,16);
 	}
 	
 	mIndices[mNumIndices++] = idx;
diff --git a/indra/newview/llface.cpp b/indra/newview/llface.cpp
index c42846b6f..d1e0e3c52 100644
--- a/indra/newview/llface.cpp
+++ b/indra/newview/llface.cpp
@@ -1639,7 +1639,8 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
 						if (!do_xform)
 						{
 							LLFastTimer t(FTM_FACE_TEX_QUICK_NO_XFORM);
-							LLVector4a::memcpyNonAliased16((F32*) tex_coords.get(), (F32*) vf.mTexCoords, num_vertices*2*sizeof(F32));
+							S32 tc_size = (num_vertices*2*sizeof(F32)+0xF) & ~0xF;
+							LLVector4a::memcpyNonAliased16((F32*) tex_coords.get(), (F32*) vf.mTexCoords, tc_size);
 						}
 						else
 						{
diff --git a/indra/newview/llviewerjointmesh.cpp b/indra/newview/llviewerjointmesh.cpp
index d9e9499ce..48661cd54 100644
--- a/indra/newview/llviewerjointmesh.cpp
+++ b/indra/newview/llviewerjointmesh.cpp
@@ -736,8 +736,10 @@ void LLViewerJointMesh::updateFaceData(LLFace *face, F32 pixel_area, BOOL damp_w
 				F32* vw = (F32*) vertex_weightsp.get();
 				F32* cw = (F32*) clothing_weightsp.get();	
 
-				LLVector4a::memcpyNonAliased16(tc, (F32*) mMesh->getTexCoords(), num_verts*2*sizeof(F32));
-				LLVector4a::memcpyNonAliased16(vw, (F32*) mMesh->getWeights(), num_verts*sizeof(F32));	
+				S32 tc_size = (num_verts*2*sizeof(F32)+0xF) & ~0xF;
+				LLVector4a::memcpyNonAliased16(tc, (F32*) mMesh->getTexCoords(), tc_size);
+				S32 vw_size = (num_verts*sizeof(F32)+0xF) & ~0xF;	
+				LLVector4a::memcpyNonAliased16(vw, (F32*) mMesh->getWeights(), vw_size);	
 				LLVector4a::memcpyNonAliased16(cw, (F32*) mMesh->getClothingWeights(), num_verts*4*sizeof(F32));	
 			}