Still getting [object XMLHttpRequest], and no thumbs, or sometimes just a couple instead of the hole batch. As a workaround I found to create thumbs in batches of 3 or so.. working through the list gives me thumbs for all pics. Still getting [object XMLHttpRequest]-errors but it seems to work. I played with permissions, reinstalled the plugin, disabled other plugins etc.. but none worked.
I forgot when the trouble began, either when I upgraded WordPress to 2.7.1 or when I upgraded NextGEN to 1.1.0, which was around the same time. Sorry about that.
WordPress version = 2.7.1
NextGEN version = 1.1.0
Browser = Firefox 3.0.6 (Gran Paradiso)
Server(NAS) = Synology DS207+
* Operating Systeem : Linux
* Server : Apache/2.2.8 (Unix) mod_ssl/2.2.8 OpenSSL/0.9.8g PHP/5.2.6
* Geheugen gebruik : 3.54 MByte
* MYSQL Versie : 5.0.51b
* SQL Mode : Niet ingesteld
* PHP Versie : 5.2.6
* PHP Safe Mode : Uit
* PHP toegestaan URL fopen : Aan
* PHP Geheugen Limiet : 128M
* PHP Max Upload formaat : 32M
* PHP Max Post formaat : 32M
* PHP Max Script Uitvoering tijd : 240s
* PHP Exif ondersteuning : Ja ( V1.4 )
* PHP IPTC ondersteuning : Ja
* PHP XML ondersteuning : Ja