it's your end - sounds like you need to either replace your adsl microfilters or get the phone box rewired.
forum access yesterday (june 15th) would have been patchy anyway as I was moving all the new stuff back to the old folder having first deleted the old forum completely.
It should all be working from now on.
I still have to get all the attachments re-uploaded (only 8,000 to go) back to the file I deleted yesterday
(yeah well if it was easy we wouldn't call it 'hindsight' After that I'll redo the template and style sheets from scratch so expect some weird cosmetic changes over the next few days.
Somewhere in the mass move around yesterday I lost the navigation bar. so redoing the templates from sacratch ought to fix that.
But on the whole - things should start to settle down in the next week.
any other: issues post here or pm me.