Ok, connection works fine... But I don't think the PSP should completely freeze after a couple of minutes online!
It's not a memory issue, since even Google can freeze it (and I reckon we all agree Google is a rather 'light' website). While the page's loading, that white orb pulsing on the left corner of the screen stops completely, I can't press any buttons, power/standby don't work; after a few seconds it will just turn itself off completely.
I don't see the reason, as I've gone through several different firmwares while trying to fix this problem, but all of them (3.52M33, 3.71M33, etc) were the same on this subject.
Thanks in advance.