Where are my Apps gone? Not shown under all apps, in my phone I have a nuumber of Android apps installed. 

When I use them from desktop shortcuts of phone, they work normally but in "All apps" (having up arrow symbol) section, it only shows 4 apps: Latitude, Local, Maps and Navigation. While all other apps are not there but still installed. 

So I am wondering that why and how that happened? I saw some other similar titled questions but they are different. I didn't hide any thing intentionally but not sure if I set some thing.  

Please note that I am not a layman, I am a developer so when I am doing some thing then I understand what I am doing, so I think it is some thing that did automatically, may be after and because of updates of apps.  I also have app2sd card so not sure if it's related.

So please some one tell if you know that how can I have my apps again under that apps section and can use it normally. My Android version is, Froyo and I'm using an HTC Wildfire.
I solved the problem myself. I had a game installed on SD card named, Hambo, I shifted it to phone and all apps, came back to their place, what else change I did earlier was to remove updates of Android market app. So google play was removed and then I did the only change of moving one app. from SD card to phone and my problem was solved. I don't know actual reason of problem but based on what I read some where I think it was may be waiting for some update or change in some installation after the uninstallation of play update. So when I shifted an app to phone, all old things restored at their place.