Try installing one of the clocks that is built in the rom under the clock folder. If that does not work I would recommend to install that cab that Psyki build a few pages back to remove the screen savers in each screen and the clock fix that goes along with it. I used it and it works great.
Install the cab on your sd card and run it. It will also make your phone faster when you slide it open. It really takes away alot of the delay in this rom. I hope this helped out.
The issue you are having with the clock is the screen savers in all screens cab built into the roms and the clear clock cabs built into to the rom. The cab I talked about above removes the screen savers in each screen and fixes the clock to continue to remain clear and work without the cab for the screen savers. good luck.