same problem here
I think this is not Roundcube problem. I have 2 servers and every version of RC (01beta2, 01rc1, svn) is working good on first server. But no one works on second server. Same RC configs, but different apache and php modules included.
No errors in apache or RC logs.
I tried different databases (MySql 4, MySql 5, Postgres
- no effect.
browsers: Mozilla, Opera, IE - no effect.