Custom SimpleCursorAdapter - Sections Problem

public class NewsAdapter_new extends SimpleCursorAdapter {
	protected static final String TAG = "NewsAdapter";
	
	protected static final int TYPE_HEADER = 0x00;
	protected static final int TYPE_NORMAL = 0x01;
	protected static final int TYPE_COUNT = 0x02;
	
	protected final LayoutInflater mInflater;
	protected final LinkedHashMap<Integer, String> mSections;
	
	protected int mCurrentSectionMapSize = 0;

	public NewsAdapter_new(Context context, int layout, Cursor c,
			String[] from, int[] to, int flags) {
		super(context, layout, c, from, to, flags);
		
		mInflater = LayoutInflater.from(mContext);
		mSections = getSeparators();
		mCursor.moveToFirst();
	}
	
	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
		int viewType = getItemViewType(position);
		
		mCursor.moveToPosition(position);
			
			switch (viewType) {
				case TYPE_NORMAL: {
					// Normale Einträge werden hier initialisiert
				
					break;
				}
				case TYPE_HEADER: {
					// Header-View wird hier initialisiert
					break;
				}
			}
		
		return convertView;
	}
	
	@Override
	public int getCount() {
		if (mCursor.getCount() != 0) {
			return super.getCount() + mSections.keySet().size();
		}
		
		return 0;
	}
	
	@Override
    public int getItemViewType(int position) {
		if (mSections == null) {
			return TYPE_NORMAL;
		} else {
			if (mSections.containsKey(position)) {
				return TYPE_HEADER;
			} else {
				return TYPE_NORMAL;
			}
		}
    }
	
	@Override
	public boolean areAllItemsEnabled() {
		return false;
	}
	
	@Override
	public boolean isEnabled(int position) {
		if (mSections == null) {
			return true;
		}
		
		return !mSections.containsKey(position);
	}

    @Override
    public int getViewTypeCount() {
        return TYPE_COUNT;
    }
	
    protected LinkedHashMap<Integer, String> getSeparators() {
    	LinkedHashMap<Integer, String> map = new LinkedHashMap<Integer, String>();
    	String newDate = "";
		String oldDate = "";
		
		mCursor.moveToFirst();
		
		if (!mCursor.isAfterLast()) {
			do {
				String currentString = mCursor.getString(mCursor.getColumnIndex(ArticleCol.DATE));
				newDate = currentString.substring(0, 10);
				
				if (!newDate.contentEquals(oldDate)) {
					map.put(mCursor.getPosition(), Util.formatBackToRealDate(newDate));
				}
				
				oldDate = newDate;
			} while (mCursor.moveToNext());
		}
		
    	return map;
    }
}