On the form on http://ppbm5.com/submission.html select a raid level of Raid 0 for the OS disk and select the Number of OS disk next. The only choices you see are 3, 4, 5 and 6. The same applies to the project disk question and the output disk question. Using Chrome or Internet Explorer the number of disks shown to choose from are 2, 3, 4, 5 and 6. Firefox hides or forgets the option for 2 disks. The form used shows up correctly in the Form Maker site, it shows up correctly in Dreamweaver, it shows up correctly in both Chrome and Internet Explorer. My only conclusion is that this is a Firefox issue. What can be done to resolve this? As it currently is, one can only tell visitors to only use the form with Chrome or IE. PS. I tried with FF 4.0 beta 10 and the problem persists. BUT, the strange thing is on two other machines, with FF 3.6.13 the problem does not occur, so something must have messed up my regular system to prevent the correct display of the page. I tried disabling add-ons, extensions and plug-ins, but that did not help.