Irrecord don't detect anything but mode2 does

[X-Dimension <X-D...@gm...>]

Hi!

I've used Lirc a long time ago on my Linux HTPC with a serial IR receiver  
and it works fine.
Now some years later, i've built a new HTPC and want to use my old serial  
reciever again.
But i can't get irrecord to detect something.

I do the following:

1. modprobe lirc_serial to load the driver
2. mode2 -d /dev/lirc/0 to test if the reciever detects my remote control.
-> after pressing some buttons mode2 shows me a lot of output, so my  
remote control seems to work.

3. irrecord -d /dev/lirc/0 myremote.conf
-> Irrecord starts without a problem and tell me that i should press RETURN

"Please send the finished config files to <li...@ba...> so that I
can make them available to others. Don't forget to put all information
that you can get about the remote control in the header of the file.

Press RETURN to continue."

After  pressing RETURN i push any simple button  on my remote control for  
at least a second.
I remember that there should shown some dots on the screen when pressing a  
button, but they don't!
10 seconds after pushing the last button on my remote i get the message:

irrecord: no data for 10 secs, aborting
irrecord: gap not found, can't continue

Because this message is showing 10 seconds after pushing the last button  
you see that irrecord seems
to recieve something from my remote control.

Ive tested it with 2 different computers, 3 different remotes and 3  
different linux distributions, the problem stays the same.
-> Tested with Mandriva 2009 x86_64, Mandriva Cooker x86_64 and also  
OpenSUSE 11.1 x86_64.
-> As remotes i used a Toshiba CT-90287, a Technics/Matsushita RAK-SC 310  
M and a Medion MD 4688 which i used
some years ago with this serial receiver successfully.

Maybe anyone had an idea what goes wrong here.
Thanks a lot!