I have the K770i connected with this PC Suite 3.209. This is great because I can use this phone tool to organize & backup my contacts, sending and reading SMS, etc. But after I disconnect it via the USB, and I switched off the phone, it couldn't be turned on anymore, unless I insert the battery again. Even worse, the battery level is reduced to very low power.
I suspect these are the bugs within this 3.209 version. Is anyone facing the same problem? Is there any way to report this problem to acquire any fixture or updates from Sony Ericsson?