BlackBerry Manager > BlackBerry Domain > Servers > SERVERNAME > Connection Service > Edit Properties > Logs > HTTP logging enabled > True
It's turned off by default, whereas in 4.0, it was enabled. After you enable it, the service does not have to be restarted.
Code:
<2006-05-04 23:50:36.903 EDT>:[4101]:<MDS-CS_TESTBES1>:<DEBUG>:<LAYER = IPPP, HANDLER = HTTP, DEVICEPIN = u1, URL = http://wap.blackberryforums.com/ : SKIPPED IMGS 0 total size 0.0K, SENT IMGS 3, UPDATED IMGS 0, SKIPPED JS 0 total size 0.0K, SENT JS 0, UPDATED JS 0, SKIPPED CSS 0 total size 0.0K, SENT CSS 1, UPDATED CSS 0>
Verbose HTTP logging is another - it will also capture the body rather than just the HTTP headers. If you are just wanting to capture the URLs, then go with the HTTP logging. Either one will likely cause a substantial increase in file size than with it disabled, so keep that in mind - and keep an eye on it over the first few days.