I’ve got the same problem. Tried the tricks above but nothing works.
It HAS been working fine ealier, but the last one og two weeks it has come with this timeout error
Online Backup for WordPress Plugin Version 3.0.0
WordPress Version: 3.5.1 (standalone)
PHP Version: 5.3.26
Server Software: Apache
MySQL Server Version: 5.1.66-0+squeeze1
MySQL Client Version: 1.0; MySQL Packet Size: 16?MiB
Memory: 256M; Post: 96M; Upload: 96M; Timeout: 50
Memory Changable: Yes; Admin Cache Size: 521.66?KiB
Status: 1 row, 33.2?KiB packet size, 540.92?KiB cache freed, 63.97?MiB memory used
Capabilities: hashcopy gzdeflate php5hash DES AES128 AES192 AES256
End of Information
