>Hi,
>Should we tell the truth of our program bugs to our client? Or, we make a story/other excuses ?

How about telling it to a potential client?

I know we've sold the apps (whole suite) after a long demo, where we honestly said where the bugs are. Even better, we brought another customer along, and told the prospective "these guys use it for a few years now, they'll tell you where the bugs are".

The point was in the location of the bugs. They were in the features they wouldn't need right away, or wouldn't use them at all, so they figured we'd fix them by the time they needed them.