New To Yacy - Problems with it Hanging

 I just recently installed yacy, it's I hope installed as a "Senior" node however I have it proxied through

Apache for https access by my customers, so it is raw at and proxied

 For some reason after operating a number of hours it just locks up.  The process is still running but it stops responding.  The scropt locks also at this point so I end up doing a killall -u yacy; killall -9 -u yacy (I have it running under UID yacy) and then restart it and it works again, for a while.