[oldgarfield]

I found that TTS does not work when opera 9.5 is running. In Malrom, Opera 10 is installed as default, and TTS works out of box.
A few days ago I replaced Opera 10 with 9.5 because I want to make zoom bar working. And bang! TTS no longer works once Opera 9.5 is running. It only works after first soft reset. Then if you run Opera 9.5 once, it will stop working even you kill the process using CleanRAM.
After I figured this out, I installed NoPush Internet cab, and also modified the registry to remove OpearL.exe from exclusive list. (HKCU->Software->HTC->TaskManager->Exclusivelist->System).

Now when I click x when opera runs, the opera can really exit from the memory. And TTS works again. I don't know about other ROMs because I never tried this with MightyROM. But maybe this is helpful to some of you...