Crazy Visual Studio: “No files were found to look in. Find was stopped in progress.”

This is the second time I have faced the same problem... No gurrantee that it won't happen for third time. So here come my tips to solve it. The problem is, in Visual Studio 2008, whenever I tried to find someting in files, after clicking find I got a reply "No files were found to look in. Find was stopped in progress.”. Being stupid and superstitious, I restarted visual studio, din't work. Then restarted machine as well, din't work. Now its time to think logically. Asked my best friend - Google, for solution. He gave me this, this and THIS!!!.. In short: the solution is, press Ctrl+Scroll Lock and everything gets back to normal. If it doesn’t work, try to press Scroll Lock and than hit Ctrl+Scroll Lock again. I have no idea why or how it works, but the fact is that it does solve the problem, if anyone knows what happened here, please leave your comment and share your knowledge with us. This is a very strange and odd bug indeed, I must say.