A319 FLT CREW HAS PITCH TRIM ABNORMALITY DURING CRUISE.

Narrative

APPROX 1 HR INTO FLT; THE MANUAL TRIM WHEEL STARTED MAKING 1/4 REVOLUTIONS COMMANDING NOSE UP AND NOSES DOWN PITCH. AFTER 2 CYCLES OF THIS; I DISCONNECTED AUTOPLT #1 AND AS I CONNECTED AUTOPLT #2; WE GOT AN 'ELAC 2 PITCH FAULT' ECAM. I ASSIGNED THE ACFT TO THE FO ALONG WITH ATC; WORKED THE ECAM ACTION AND ALSO THE FLT MANUAL WAS REFERRED TO. IT MUST BE NOTED THAT WHEN WE RECEIVED THE ACFT; THE INBOUND CREW TOLD US THAT THEY HAD GOTTEN THE SAME ECAM MESSAGE WITH PWR XFERS. I HAD MAINT LOOK AT THE ACFT AND THEY REPLACED THE #2 ELAC BEFORE DEP AND OPS CHKED IT GOOD. AS WE TAXIED OUT FOR DEP; WE GOT AN 'ELAC 2 ELEVATOR PITCH FAULT.' WE CALLED MAINT AND PERFORMED A RESET PROC. WE TAXIED FOR 2 MORE MINS AND GOT THE SAME ECAM MESSAGE. AGAIN; WE CALLED MAINT AND HE SAID TO TRY 1 MORE RESET. WE DID AND IT WORKED -- FOR DEP AND TAXI OUT AND INITIAL CRUISE. BACK TO THE IN AIR PORTION; I HAD REFED THE BOOKS; PERFORMED ECAM AND DISCUSSED WITH THE FO AND OUR JUMPSEATER THAT THE ELAC ITSELF WAS REPLACED; THE MERITS OF CONTINUING FOR ANOTHER 4 HRS WITH AN ACFT THAT HAD JUST HAD UNNEEDED PITCH TRIM EXCURSIONS DID NOT WARRANT A CONTINUATION PAST DEN.