publishing my blog fails: time out

[ozzy-collectors-forum]

I use Thingamablog to publish entries on my weblog.
Since 29/04 publishing fails:

[22:48:19] REPLY: 200 TYPE is now 8-bit binary
[22:48:19] CMD : ---> PORT 192,168,1,64,10,53
[22:48:19] REPLY: 200 PORT command successful
[22:48:19] CMD : ---> STOR entry_60.html
[22:50:21] Publish failed for ozzblog
[22:50:21] Error publishing file to /public_html/blog/archives/2011/04/
Read timed out

30/04
[07:07:04] REPLY: 200 TYPE is now 8-bit binary
[07:07:04] CMD : ---> PORT 192,168,1,64,7,82
[07:07:04] REPLY: 200 PORT command successful
[07:07:04] CMD : ---> STOR simply.html
[07:07:26] REPLY: 425 Could not open data connection to port 5001: Connection timed out
[07:07:26] Publish failed for ozzblog
[07:07:26] Error publishing file to /public_html/blog/
Could not open data connection to port 5001: Connection timed out

[07:23:41] CMD : ---> PORT 192,168,1,64,10,4
[07:23:41] REPLY: 200 PORT command successful
[07:23:41] CMD : ---> STOR simply.html
[07:24:02] REPLY: 425 Could not open data connection to port 5001: Connection timed out
[07:24:02] Publish failed for ozzblog
[07:24:02] Error publishing file to /public_html/blog/
Could not open data connection to port 5001: Connection timed out

Any idea???