On the EU product page (use the link on the header of the EU firmware login page) there is reference to firmware version 1.12EU Beta. This does not get automatically added by the firmware check - presumably because it is in Beta.
1.12EU_B01 Fixes the compatibility issue with DSL-320T and DSL-320B. 05-09-2008
(referring to two ADSL modems)
There is a broken link on this page to it this firmware.
You can get to it though by pointing your browser at:
ftp://ftp.dlink.co.uk/dir_products/dir-855/
Anybody tried it? Any other improvements?
Yes it is wishful thinking... just the 2.4Ghz range on this router is so poor considering its price.