delay and strange behavior

[ahmedsmart4tech]

we are using lighstremer for a while now , but unfortunately for the last month we are facing unknown problems with it, for example unsubscribe for items and a very strange delay on responding and this last one happened occasionally , i am sure that the fix is simple but i can't find it . so please i need your help to deal with this situation because i am only one week for launching my software that receive its data from the lightstreamer. and if you got paid service to help me to ensure the lightstreamer will work perfectly please tell me more

log file download link:
https://www.mediafire.com/?w8crwid46838vco