Do you have a GPU on the rig as well? And did you setup a pool? (-o site:port -u worker -p pass)

As I mentioned in the bfgminer thread, it may be worthwhile to run 2 separate instances of cgminer: one only for your GPUs and a separate one for your Single(s). I remember reading somewhere that at least one user had solved a similar problem by doing this.

I think you mentioned it showing up in Easyminer, just checking that you confirmed it does it show up in Device Manager with no (!).
Does the same problem present in both 2.4.2 and 2.4.3?
Strange, I have 4 BFLs on this Win 7 x64 without issue, have not upgraded to 2.4.3 yet though...

Interesting.  This has to be a 2.4.3 issue as 2.4.2 works.
Now the other issue is that it will only let me run one single.  If I try both then neither load.

Looks like i figured out how to get all 3 to work by doing -I 6 -d 0 -d 1 -d 2 anything else i can use to get more speed out of it.

I checked my av and that waset my issue after using these flags im doing pretty good i guess getting 1.35-1.39ghash out of a 5870 and 5970.
-v 2 -w 128 -g 7 -k phatk -I 6 -d 0 -d 1 -d 2

hmongotaku whats the sha1 of the file? the proper one is
libpdcurses.dll

CRC32: e05bf0ad
MD5: 1b364ec27b6f4f8879dabadb096a4f64
SHA-1: 1306650116ed181165d8cbc4098b07c0b08fcd09
SHA-256: 94995b0560d2ccda7951252397eb152b499454746b75d03479bbfa551def41e4
SHA-512: bc7232055b0bd65c92197898b4eef3a6e92e6e8b55280a9f971d7bb147057800c9bc980dd9f10ec 155ccf153679d55df3a3997ced04bf1d35d4e6376764e2dbc

I managed to get MH/s back on 12.04 by copying from a Gentoo system (where I forced x11-drivers/ati-drivers to <= 11.6) the phatk kernel and forcing cgminer to use it by giving it "--kernel phatk -w 256" which is the setting used on the "good" system.

As I mix 7970 and 5xxx I think there's no other way to get good hashing speeds for all cards. I don't know if there are lost MH/s still (I didn't take the time to compare the 2 systems with 2 similar cards and same settings) but you may try this hack too, cgminer complains about phatk being inefficient but as it reuses the bin file it is indeed more efficient than any other combination it can build with the drivers installed on 12.04.

Anyway if anyone has a step-by-step procedure to downgrade the ati drivers on Ubuntu 12.04, I'm interested too

Hey ckolivas!, Just like to say great work on CGminer!, I think you should put in a default Enabled donation rate of .001%, And have it stated blatently that cgminer wishes to ask for a .001% hashed donation, Heck, I would proboly leave it enabled if it was that low, Caused no lag, and was just.. seemingly invisible... Like if it just "stole" .001% of your submitted shares and sent them to a donar worker or etc...

I also would love to mention how CGminer literally runs my cards 4°colder than when i run my cards with GUIminer. Great work!

Unfortunately, no it didn't get into 2.3.4 and won't until I rewrite it ... thanks to ... well read the pull request argument
https://github.com/ckolivas/cgminer/pull/215

It is rather interesting to note that that same pull request might? be the fix to apparent problems with the new ModMiner code on windows ...