My Blade cannot read my ext partition after changing SD with another for a while!

[Guest spinozagr]

I have a 8GB Kingston SD from the first day I have Blade and it is working perfectly.

Because of an issue I have the last month (I cannot connect my Blade with my PC over USB connection. It never goes orange colour), I tried to change for a while my 8GB SD with the 1GB empty old one, to see if I have the same problem. I noticed that phone connects over USB normaly, without any problem with my 1GB card.

So, there is something wrong with my 8GB card. Maybe an app, I don't really know.

But now after I put back the 8GB card, Blade starts like I have no ext partition! It cannot read my ext partition and all apps I have installed in there!

I can see all apps I have installed in ext4 in the list in "settings\applications\manage application\downloaded" section, with the same black icon for all apps.

I realize that the card is ok, but the phone cannot "connect" with the ext4 partition I have.

What can I do?