Memory is low : Leave the transaction before taking a break

Hi,

In our GTS 7.2 system  we are getting the message " Memory is low : Leave the transaction before taking a break".

We able to get the results , still getting these messages.

I checked the forums and snotes and increased the Extended memory  still same  message.

We are on 64 bit   with Windows server.

Please suggest what are the things i need to check to fix this message.

Thanks,

Subhash.G