Empty Message and Combo box

i am using microsoft visual studio .net 2003 on windows 2000... i created a project for C# windows application... in the form1, i draged 2 control... 1 combobox and 1 command button.... on the click event of command button i written following code...
comboBox1.Items.Add("Abc");
comboBox1.Items.Add("Bcd");
MessageBox.Show("dhfgjdf");

list count of combo showing that there is 2 items... when i click on combo box, it show 2 blank items in the list... means... "Abc" and "Bcd" is not showing....
And messagebox is displaying but again blank....even OK button is also blank...

i thought that this problem of either of .net or windows.... then i formatted my system and then installed everything.... but problen is same....then i intalled .net from same cd to my friend system... there it working fine....

help me out....

Do you have any McAfee products on your machine? There is an issue that creates just these symptoms. McAfee have provided a fix on their Web site.

Thanx buddy.... i tried it... its really working... and now i m going to find out for Patch at mcafee's site....


thanx a lot....