Ok here goes, will try to explain as best as I can the problem.

First time works good.
Click on Gallery>> Category 1 >> Album 1 >> Photo 1.
Everything works good.

Then
Click on Gallery>> Category 2 >> Album 1 >> Photo 2.
Up pops the first photo veom Cat1, Album 1, Photo 1.

Trying again the first photo always comes up.
If I go to Admin, Modules, Update (xcal mod). It will work correctly one time then the same as above (same photo appears)

XOOPS 2.0.7
Apache 1.3.33 (Unix)
PHP 4.3.9
MySQL 4.0.22-standard