I have recently noticed that some times Joomla! adds a ?time=xxxxxx to the SEF url. I have no idea what is causing this, but it is messing up with some other component. Any idea what might be causing it? Or how to figure out what is causing it?

Most likely not a JoomSEF issue, but I was hoping someone could help me find out what caused it here..

Hello,

well, most likely some component plugin is appending this variable. Is it appended to all URLs or just some (specific component)?
If you have JoomSEF 3.5.0, you can try to use "URL source tracing" to detect, where in the source code, the URL gets generated. However, this may not detect a plugin, that modifies the already SEFed URL - in such case, try disabling tour extra plugins one by one and see if it helps.

I added that, but I tried to filter find the URL, and saw that it is not stored. I am not sure what causes it, as it only appears after a while of idle (I think) and then a refresh or switch of page. It is not limited to one component, it can appear on any component loaded. I think it appeared after I upgraded J!, but I am not entirely sure, as it is only today I noticed it was causing an error.

So this stared to appear with Joomla 1.5.15?

Yes, I think so.

BTW, you have lots of spam bots registering here, should give moovur a try ;)

I hate captchas. When they appear, we are blocking their IPs.