Mouse copy'n'paste on text terminal skips letters

Hi,

I have a Logitech mouse attached to an USB port. It works
perfectly, except one thing:

I can select a region on the text terminal, but when I
want to paste it with the middle button, it skips letters.


Example:
selected text: "FreeBSD 5.2-CURRENT"
pasted text: "FreeBS 5.2-NT" *and a BELL sound*

The text is always pasted same wrong way. There
are no random skips.

Any idea how to fix this?

System:
FreeBSD 5.2-CURRENT FreeBSD 5.2-CURRENT #0: Sun Mar 28 22:10:17 CEST
2004 i386
uhci0: <Intel 82371AB/EB (PIIX4) USB controller> port 0xc000-0xc01f irq
12 at device 7.2 on pci0
usb0: <Intel 82371AB/EB (PIIX4) USB controller> on uhci0
usb0: USB revision 1.0
ums0: Logitech USB Receiver, rev 1.10/9.10, addr 2, iclass 3/1

Martin