1) IPPP is already enabled but HTTP Logging and Verbose HTTP Logging are *not* enabled. I enable them and test.
2) Look deeper into the MDAT log file, I do find something like below. However, it's still not that descriptive because it doesn't tell you who the user is.
2009-03-16 10:47:39.687 CET>::<MDS-CS_BES_MDS-CS_2>:<DEBUG>:<LAYER = IPPP, EVENT = Receiving, TAG = 1202351701, DEVICEPIN = xxxxxxxx, USERID = xxx, VERSION = 16, CONNECTIONID = 812881151, SEQUENCE = 0, TYPE = CONNECTION-REQUEST, CONNECTIONHANDLER = httpc, PROTOCOL = TCP, PARAMETERS = [www .google. ch:80], SIZE = 1197>
3) BB has two browsers. I'm wondering what is the difference between them.