Problem: Thin Client and Copy/Paste

Hello always, my name is Gigi and I'm new member of this forum.

Nice to meet you everyone.

I hope that someone can help me! :D

I'm a Wyse thin client with Linux ebadded and the  host s.o. is Windows 7.

Two month ago, i saw this problem: when i copy (and paste after) every text , the system, logout and show me the main screen of thin Client; after I log in again and paste the text.

Every time, out when i copy and i must log in again to paste the text.

With this problem is very difficoult to work.

Can we help me please?

Thenk you very  much

Reguards