The FIOS workaround is easy and has been discussed in numerous threads.
There is obviously a problem with wifi on the iPad that will surely be addressed but until then, these changes have worked for me and nearly everyone else that has tried it.
- Change from WEP to WPA
- Change the channel to 11
- Forget the network on the iPad
- Reconnect
Worked perfect for me. Haven't had in issue in 3 days since I did the above changes.