Uncharted 3 pak23.psarc file size

Hi there,
Could someone please confirm the folder size of the extracted pak23.psarc file? For some reason the pak23.psarc is around 8.1 GB. However, the extracted folder is just 5.88 GB. Is that right? Could somebody confirm please? My psarc.gui finishes with the following output

04:58:44.846: zlib.ZStreamException: inflating: invalid block type
at zlib.ZOutputStream.Write(Byte[] b1, Int32 off, Int32 len)
at PSARC_GUI.ArcAccess.inflateEntry(aEntry entry, BinaryReader input, UInt32[] zLengths, UInt32 cBlockSize, String fileName)
at PSARC_GUI.ArcAccess.read(String fileName, Int32 iS, Int32 iE)
at PSARC_GUI.ARCMain.button1_Click(Object sender, EventArgs e

I think that my pak23.psarc is corrupted, therefore I am asking this question! Also the "normal" psarc.exe terminates unexpectedly and it seems there are files missing (my extracted files are just 5.88 GB, 763 files). It would be great if somebody who is playing the game or who played it without problems could tell me please how big his extracted pak23.psarc folder is. Thank you!