Ok, after a couple of days of testing with 329+, I had this: no lock ups until last night, when all at the sudden the player did not accept any more remote control commands. Than it would delay responding to buttons on the empeg itself (trying to change preset on the radio), and eventually locked completely. The radio would still work and be loud and clear, but I could not do anything but pulling the empeg out of the sled. Not even switch it off.
This had never happened in last months before I installed v. 2.00 final + Hijack 329, and I've been using the radio daily so far.

I am going to try with 2.00 final without hijack and let you know.

Edit: I see Hijack 330 is out, so I'll try that first