Hi Chris,

we encountered similar problems, and wrote two blogposts: One about tweaking
all the components, one about zipping the session. 

http://www.small-improvements.com/blog/technical/tuning-wicket-session-size
http://blog.small-improvements.com/2012/02/19/reducing-wicket-session-size-to-one-third/

You should use a proper profiler (e.g. JProfiler) to figure out the size of
your pages and objects, much more efficient than logging stuff youself. And
then also you can also write a custom IPageMapEvictionStrategy that takes
session size into consideration when evicting pages (e.g. you evict so many
pages until the session size is below 1MB again). That's the last resort
only, but helps avoiding the nasty blank exception page.

All combined, you should be able to work around the session size issue.

Cheers,
Per


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