He said if you want your 3g connection to the net killed, use flight mode.
http://talk.maemo.org/showpost.php?p...&postcount=341
I think he mentioned earlier in the thread that it's still quite dodgy
*edit*
See posts #355 #373, several posts in between, & a few after #373...

It works through an exploit/flaw which may or may not be plugged later.
The flaw is exploited by reinstalling profilematic each time you get the credential problem.
If the flaw's eventually plugged open-mode or inception will have to be used.
Power saving mode seems to work all the time without needing to exploit a flaw.
Despite being doco'd in the API as requiring credentials.....

It may be possible to use inception to keep aegis away from what profilematic's doing.
I can't recall if inception rules remain on reboot though, haven't followed it all for ages.
Just read the inception & sh thread/s carefully, some may offer further advice there.