.NET framework 1.1 SP1 Issue - Please help!!!!

[spsamster]

Hi all

I have a custom usercontrol in my window form "form1.cs" .
"initializecomponents" of "form1.cs" initialises usercontrol

This usercontrol is derived from a base component class.
Usercontrol populates printer informations.

we populate default printer related informations to usercontrol through Pinfo() method (a function in base component class )
Pinfo() invokes getinfo()(another function in base component class ) using methodinvoker and asynccallback

My "basecomponent" class definition starts with
[ClassInterface(ClassInterfaceType.None), ComVisible(false)]

Code works perfectly in .NET framework 1.1

Then I installed .NET framework 1.1 SP1

Here the problem begins. When executes ShowDialog(Only at first call) It hangs for
some minutes (5-15 mins) before showing the dialog "form1" .
If we clicked second time it will display the screen immedialtely.

Anyone come across this type of issues???
Is there any problems asynccallback with methodinvoker in .NET fx1.1 SP1
What is the reason for this problem in .NET fx1.1 SP1???

Thanks a lot for any valid tips/help !!!!
Regards
sumesh