What steps will reproduce the problem?
1. Create a custom widget which can process some events. For example I have
ImageCheckbox which displays different images depending on its state.
2. Create BulkLoadedTable and insert your custom widget into any table
cell. As we have only StringCellRenderer for Bulk Loaded tables we have to
convert any widgets into String in renderCell method to be able to render them.
3. Run your code.

As a result such table will display all your custom widgets fine.
But the problem is that no events are being passed to such widgets. So you
have only some kind of read-only ImageCheckboxes which can not react to any
events.

If we do not use BulkRenderer than all just works fine but rendering is
very slow (comparing to Bulk loaded table). 

I tested this using GWT 1.4.61 and the latest GWT Incubator sources.

Are there any ways to get this working? 

Thanks,
Leonid