Strange behaviour of .net framework

[Guest]

Hi,

I've got the following problem:

My application consists of a windows form (all vb.net) and several panels
placed on it. Each of this panels has a *.png or *.jpeg file as a background.
Now, depending on user interaction, several of these panels may be invisible
or visible.
Unfortunately, sometimes these panels are just not shown!!! And even more
strange: When I rerun the application (without any recompiling or any
changements) they are suddenly shown again!

Can someone explain this to me?

Greetings,
Peter

 

[CT]

Peter,

Hard to say what is happening. Is there a pattern to when it happens, i.e.
one particular user/group of users, or when a certain actions is performed,
or the location from which the user runs the app?