Windows Explorer Address Bar forces highlighting

Hi,

I have the same problem as here: http://tortoisesvn.tigris.org/ds/viewMessage.do?dsForumId=4061&dsMessageId=1021600

But my system is Windows XP SP3 and the problem exists here on a lot of machines.
I have round about 5 repositories. One of them is very big. 17000 revisions with 35000 files.

If I open the windows explorer, often I cant't write anything in the address bar, because the address bar forces highlighting the whole text.

I have the problem since many versions ago. Actually I use 1.6.11.

If i kill TSVNCache.exe, the bug is gone for a few minutes.

Can anyone help me?