Do anybody knows what's happening with my subtitles?

Everything on config seems to indicate that I have it enabled. I enable/disable it on the menu, but alll I get is a weird behaviour. It shows up for a micro-second and then dissapears, or it shows the same text for ages (maybe five minutes) and then changes to whatever text that doesn't have nothing to do with the actual show...x

Has anyone go it to work?

Cheers..