[gmx-users] grompp warning - serious or not?

[Samantha Kaye]

Hi,
I have been getting this warning when running grompp in gromacs 3.2.1 
and using the ffG53a6 forcefield:
WARNING 2 [file "1S50_protein.itp", line 9698]:
  No default G96Angle types, using zeroes
Excluding 3 bonded neighbours for Protein 1
Excluding 3 bonded neighbours for GLT 1
Excluding 1 bonded neighbours for HOH 359
Excluding 2 bonded neighbours for SOL 24471

Is this a serious problem or should I ignore it?
TIA
Sam