Windows 2000 iNotes

i have upgrade Domino 6.5.6 to 8.5.1 and in our organization there are some pc with Windows 2000 and ie 6.In this pc if i open inotes in full mode work fine only the first time. the second time i have an error. if clear cache i can re-open inotes in full mode.

Other problem is the TIF attachment, i can’t open directly, i must save local and then open.

This second problem occur also in Windows xp with ie.6 and inotes lite mode.

thanks for any advance.