parece ser que el 29/07/2008 Opera saco una nueva release de Opera 9.5 (fix 0.1) de la que he leido lo siguiente en la
pagina de opera.
"There have been reports of OOM (Out of Memory) problems on some devices. Phil Nickinson over at WMExperts.com have suggested a workaround to avoid this problem. By changing the location of the folder where Opera stores the cache-files, more memory is available for Opera.
Please note that depending on the speed of the memory card, Opera might perform slower and you will probably experience some delays when Opera reads and writes to the cache."
En la seccion de descargas hay una version de Opera, la cual desconozco si incluye este fix.