Hi everyone,
After I had updated my blog to WordPress v2.01, I encountered the same problem as anyone here: i.e. as I wanted to upload the original image (original size) in the editor, WordPress automatically switched it to the thumbnail size (128x96 px). Such a disobedience!
Based on the posts in this support forum, I found out that you can manually adapt this "disobedience" by using the HTML-editor (icon: HTML). If you selected the original image in thumbnail format and then clicked the HTML-icon, a pop-up appeared with the source code. You only had to delete the heigth-tag, and the thumbnail immediately changed in the original sized image.
Now, this process is quite embarrasing. It would be much better if the upload image browser did this automatically. And after some experimenting, I finally discovered the solution!
1. Make a back-up of "inline-uploading.php" (you'll find this in the wp-admin/ folder)
2. Then, download the "inline-uploading.php"-file and open it with a text editor, such as Notepad.
3. Use 'find' and search on "<img id=\" => you will find this tag for three times in the whole document.
Now at the end of the line that begins with "<img id=\" you'll find "$height_width". DELETE this (also 3 times).
240 imga[{$ID}] = '<img id=\"image{$ID}\" src=\"$src\" alt=\"{$title}\" $height_width />';
241 imgb[{$ID}] = '<img id=\"image{$ID}\" src=\"{$image['guid']}\" alt=\"{$title}\" $height_width />';
242 ";
243 $html .= "<div id='target{$ID}' class='attwrap left'>
244 <div id='div{$ID}' class='imagewrap' onclick=\"doPopup({$ID});\">
245 <img id=\"image{$ID}\" src=\"$src\" alt=\"{$title}\" $height_width />
4. Save the "inline-uploading.php"-file and upload it to the wp-admin/ folder.
5. You're done! When you choose to upload an image in its original size, WordPress will obey you and it will execute your command in the right way.
Ciao
Filip