Browser not working in android ICS

Hello all,

I am using ICS 4.0.3

In my code browser is not working over 3G

The problem I observed is the out buffer is filling after some time and I am not able to send any frame out

if (test_and_set_bit(XMIT_FULL, &ap->xmit_flags)) is becoming true

and it is not recovering from that and everything stops from there

my driver is having

OBUFSIZE 4096 and PPP_VERSION "2.4.2"

kindly suggest me any thing I can do to solve

Thanks & Regards

O S L Reddy