I also have more or so the same problem as above.. my symptoms are as follows:

1 - Controller needs long time to sync 3-5mins
2 - Ethernet on PS3 no response at all (no blinking light etc when connected to router. Router confirm 100% ok)
3 - Wifi also cannot connect

Anyone had this kinda problem before? hope u guys can help, as i cant connect to PSN at all.. its just like the ps3 lost all its connectivity capabilities! arghh!

Thanks in advance.