Upload problem, slideshow stopped working for new albums

Hi,

i upgraded to a dev 2-x version of Gallery module and following problems occur:

- Adding photos with basic upload doesnt work at all. I submit the page... and nothing. Result - white screen after a long wait.

-Adding photos using java upload applet or gallery remote works, except it is not possible to display first uploaded image-thumbnail is displayed everywhere, but clicking on it brings you just blank screen.

-slideshow doesnt work. Clicking on slideshow link results in blank screen. slideshow DOES work at older albums, but doesnt at new ones.

There are no such problems occuring if i am logged in in standalone gallery. So gallery2 by itself is ok, i suppose.

i am really not able to resolve this. Could you please help?
thanks for any suggestions,
Paloj

system info:
Drupal: 5.1
Gallery module 5.x-2.x-dev OR 5.x-1.x (now occurs with both)
Gallery version = 2.2.3 jádro 1.2.0.5
PHP = 5.2.2-0.dotdeb.1 apache2handler
Web server = Apache/2.2.3 (Debian) PHP/5.2.2-0.dotdeb.1 with Suhosin-Patch mod_ssl/2.2.3 OpenSSL/0.9.8c
database = mysqli 4.1.11-Debian_4sarge7-log, lock.system=flock
Tools = Exif, Getid3, Thumbnail, Gd, LinkItemToolkit
Acceleration = none/900, none/900
OS = Linux station09 2.6.18imq1 #2 SMP Sun Jul 8 19:56:34 CEST 2007 x86_64
Theme = matrix
gettext = allowed
Explorer = Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; NetCaptor 7.5.3; .NET CLR 1.1.4322)
Lines in GalleryAccessMap tabulce = 17
Lines in GalleryAccessSubscriberMap tabulce = 188
Lines in GalleryUser tabulce = 42
Lines in GalleryItem tabulce = 183
Lines in GalleryAlbumItem tabulce = 15
Lines in GalleryCacheMap tabulce = 39