There are several that has confirmed the same issue with 1.11.335 and I did have the same problem. I went back to 1.10.51 and it's working again.
PMS 1.50.1 SB58 - Java 7 update 2 - Windows 7 x86 Ultimate
Intel Core 2 Duo E6560 2.33GHz - 3GB RAM
PS3 Slim 120GB - Firmware v4.00