Can you please indicate which method you're using to get RTM into gCal? The little blue badge that appears on every day? Subscribing to an iCal feed? That will help narrow down this issue.

I add RTM to my Google Calendar by:
Got to DTM homepage, click on the google calendar link, and then there is a button called Google Calendar and that loads up Google Calendar, with RTM in my calendars list.

Yes I see blue tick/Check marks beside each day.

I can add task by clicking on this check mark. This all works fine from the desktop firefox browser.

However from my mobile phone browser miniOpera. I log into google calendar for mobile. under each day I see a link titled tasks(or somethnig similar) I click on this link expecting to see the task for that day but get another page that has no task but just says remember the milk.

Any ideas?

Jamie, the RTM calendar that shows the icons for each day is a special type of calendar -- unfortunately Google Calendar is including these in their mobile version, but they don't actually include your task details.

To show your task details on your calendar (including the mobile version), you could use the iCalendar subscription for Google Calendar.

Hope this helps!