I've reported this problem few weeks ago and it's marked critical in 
seaside's bug database, so I imagine they will do something about it 
before 3.0 is released

On Mon, 29 Mar 2010, Levente Uzonyi wrote:

> On Sun, 28 Mar 2010, Chris Cunnington wrote:
>
>> Nothing to report.
>> 
>> Using the Squeak4.1-9850-beta image it is easy to install Seaside 2.8.* or
>> Seaside 3.0 using MetacelloRepository on Squeaksource.com. (Load. Open
>> Workspace. "ConfigurationOf*** load" Do it.)
>> 
>> The tests were done with ConfigurationOfSeaside28-dkh.19.mcz
>> and ConfigurationOfSeaside30-DaleHenrichs.136.mcz.
>
> Well, Seaside3.0 loads and works, but one test fails: WABacktrackingTest 
>>> #testDictionary. The cause is that #snapShotCopy and 
> #restoreFromSnapshot: are defined in Set instead of HashedCollection (Pharo 
> doesn't have HashedCollection yet). Since Dictionary is not a subclass of Set 
> anymore, these methods are missing from Dictionary in Squeak. Sooner or later 
> Pharo will have HashedCollection, so the best solution is to ask the Seaside 
> developers to add these methods to Dictionary (or HashedCollection, though 
> that may cause problems) too.
>
>
> Levente
>
>> 
>> Chris
>> 
>